How to Replace Fuel Injectors on a 99-08 Dodge Jeep 4.7 & 3.7

[@dave6135]

the Bob Ross of builds

[@IcTracers420]

Happy little injectors. 👍💨👌

[@neoobi32]

😂

[@joehernandez1472]

I have a 2000 Dodge Dakota Sport 4x4 with a 4.7 liter engine. Replaced all 8 injectors. This video was a great help, could not have done it without watching it. Keep these helpful videos coming. Thanks !!!!!!

[@dustinnadeau5151]

Just got done doing this on my 04 Dakota! Bro you're the king of these type videos! Every step was clean and clear and easy to follow and made sense! Thanks for saving me a lot of time, money and stress!!

[@martinbuilt]

You're welcome and thank you!

[@MakaylaChildress]

I’m probably doing the same thing today or tomorrow. Hope I’m as successful as you!

[@josephlininger2677]

This guy is awesome. He doesn't forget what's it's like to be new and is patient. Without you I would have been in the dark, thank you !!!

[@nausticaz6845]

Another way to reset the PCM is to disconnect both positive and negative terminals from the battery and touch them together for a couple of minutes. Basically the same as touching the positive to the chassis. We used to do that at at Dodge to clear the "Gas Cap" evap code.

[@olivert1289]

Thanks for the video! Helps us keep our 4.7s alive. Mine just rolled over 401k miles without a rebuild. I couldn't find the Denso units you used, so I used AC Delco 217-2907 for a 2007 2.4L HHR. The resistance is about +1ohm (13.2 or so ohms vs 12.3 or so) vs my 2003 stock non-HO units. They're 12 holes just like your Densos, but I didn't have to mod the fuel rail because they didn't touch the valve covers. For anyone reading this, in my experience the mpg display is super optimistic now (600 miles of mixed driving) and shows 19-22 average. Realistic fuel economy is unchanged at about 17.8 combined. There is a cold idle + AC on idle issue where it gets confused and pulses the IAC erratically, then clears up. Happened after PCM reset mainly and now clearing up. There's definitely a low rpm torque bump, and a much smoother power delivery throughout the range. Full throttle I dont notice any bonus, but part throttle and especially super light throttle, totally worth the benefit. On my Dakota the replacement was more involved because had to remove alternator and move AC compressor, and bungee wires and heater hoses out of the way. Took about 3 hours going easy and cleaning up and painting the fuel rail.

[@brad3139]

just performed this injector swap on my 2001 durango and im astonished at just how much power this actually added. great video Martin, it was alot of help!

[@martinbuilt]

I'm very glad to hear that. I just love it when a plan comes together.

[@meanstreak8345]

I’m about to do this on my 00 Durango. Did you see a better increase in mpg?

[@brad3139]

didnt have any positive or negative effect on mpg, just woke it up a bit.

[@DownHillgamer]

Damn it made that big of difference? I wana try it on my 2002 Dakota w the 4.7 now, cause I’ve been wanting to squeeze some more power out of her and was looking at throttle bottle spacers and cold air intakes and shit like that

[@brad3139]

@@DownHillgamer id say out of all the mods i did to my 4.7, the ones that made the biggest difference in noticeable power were the HO cams and the injector swap. throttle body spacers and CAI are not going to do anything other than drain your bank account, unfortunately. same goes for a tuner. i noticed little difference over stock with a diablosport. the 2008+ intake manifold swap is also a good modification but theyre getting harder and harder to find and require an adapter for the stock throttle body.

[@gregj.gotham4402]

just got the call from the shop that i had to hire to switch from my old V8 to put in the newer v8 with the 4.7 HO cam, springs and intake manifold plus the denzo injecters. finally done ill pick it up tomorrow morning. one year without 4 wheel transport can't wait until i run it on my way home, then i will do the reset to learn mode. all is good with the switch on the motor with all the work i did to it. thank you for the videos that gave me many ideas and run through on how to do's this and that. your videos are the best and i thank you for all your doing. yeah on the road again...first 750 mile ill take it easy.

[@jeffrichardson256]

I just did this to my 02 Dakota. Worked very well. Importantly I did not come across any issues that you had not already addressed and am grateful to you for such a well explained process.

[@martinbuilt]

Thank you Jeff, I'm glad hear it worked out for you.

[@waterbreakers2343]

I had replaced the injectors on my 2002 Durango a few years ago and now need to do the same on my 2000 Durango since receiving the P0207 code. Injector cleaner only helped for a few weeks then the code returned. Your video is a great reminder how to replace the injectors correctly. Thank you for such detail as your reminder helped.

[@waterbreakers2343]

After further investigating, a bad connector was found at injector #3 causing the P0303 code. Now the code is satisfied but the idle remains rough and engine requires several rotations before starting when at full operating temp, does not happen with engine cold. This began after a mechanic worked on it and will take it back to discover problem and fix. 270K miles I guess it might be time for a new one. Thx for your feedback.

[@Trailer4904]

I just did this upgrade. I haven't driven it enough yet to get a good average mpg, but my instant mpg went from 21-22 @ 50 mph to 32-36 @ 50 mph. Thank you Martin, you videos are in formative and knowledgeable. I've learned so much from your videos and I plan on doing quite a few more of you mods.

[@martinbuilt]

That is awesome, great results, thanks for sharing 👍

[@phillipmcmullen7163]

Lol false

[@ericbryant796]

Just hit 370K on my '01 which I believe has the red ring injectors...still runs great on the OEM injectors and coil packs. I do think the Superchips 3715 tune has really helped out over the years. I run the max 87 program. Engine starts first turn of the key. If I ever need to replace an injector I'll follow your excellent guide.

[@pesnet7]

Very good ! MartinBuilt I've been following you on this channel for a long time. You are my Master. I bought these injectors a couple of years ago. And only now I managed to install these injectors myself. They really made a big difference. And consumption seems to have been optimized. I have moments that make me want to meet you in person. Thank you for giving us light of knowledge and helping to improve our machines.

[@bigdaddy5150sh71]

Just changed my injectors after watching your videos. It went prefect! Thank you so much

[@moparlife1]

great video and well described procedure, tried this mod for myself and did not work as intended.i have a 2005 dakota with a 4.7 and running the ngc pcm. stock fuel pressure is 58psi for my truck.using the denso part number and a donor fuel rail modified to allow rotation of injectors i set on my way with the install.i started with -8% on right bank and -2% on the left bank for long term fuel trims.once the injectors were swapped i performed a memory reset for adaptive to start a new learning process for the newly installed injectors.within 5 minutes checked fuel trims and found -26% and -19%,major difference in fuel flow and thought might be cause i was in idle cell and consuming fuel at idle.drove the truck for 2 days and rechecked the fuel trims and no change. pcm was trying to pull a very large amount of fuel away from these new injector.had p0300 show up randomly but not counting misfires when i was able to check.truck was running ok, no noticeable change in fuel economy or response.refilled fuel tank and set out again thought maybe it would get better.after about a half a tank of fuel truck set right bank to rich dtc.desided to switch back to stock injectors as my truck couldn't adjust to this injector.martin talks about cc rating at 3 bar(43psi) not sure of what kind of jump these injectors make in flow rate at 58psi as the 90$ i spent on used stuff was enough of a loss for me and i wasn't about to send the injectors out for flow testing.just figured i would share my experience. not sure if martin is running a jtec pcm as it runs at 49psi fuel pressure and this is why his outcome was better as the fuel rating would be a lot closer. just wanted to share my experience.great video tho, i have watched many other videos and will continue to watch.

[@richwilson7017]

Same was true with me. If you have 04 or newer with 4 plug pcm your fuel pressure is to high (58psi)to use these. Runs ok but rich. Excellent video by Martin. He is the 4.7 magnum magician.

[@clintstites]

Martin's WJ is an '04 I thought. Does he say which computer he is running?

[@venM9]

@@richwilson7017 I have a ram 05. Installed the 12point and my long trims stay at -20 during idle and my short trims around -2. They go to 0 during acceleration, both long and short trims. My onboard mpg shows around 14.5 mpg compared with 11 mpg as it was before the injector replacement. I dont think I really save that much on mpg in real life, though. Maybe the computer reads the inflow fuel and not the residual outflow from the rails. The truck drives nice with good idle rpm.

[@iowafarmboy]

I'm glad I watched this first before just "digging in" on my 08 Grand Cherokee (220K miles). Only got 1 injector, but might as well do them all seeing what it takes. But these directions are absolutely very clear. Thank you!

[@martinbuilt]

Thank you for watching, if you have the dual spark plugs per cylinder you will need to use the OEM injectors as they are shorter than the earlier models. I am originally from Iowa

[@iowafarmboy]

@@martinbuilt well, hello fellow native Iowan 😊 It's a 3.7, so just a single spark plug. I've replaced the injector coils more than once (got a bad batch when initially replaced them), so I certainly know my way getting down that far.

[@martinbuilt]

@@iowafarmboy Good luck with that and have a great New Year.

[@null5647]

Great video!!!! Important information was easy to understand and apply. I'm getting ready to replace my injectors for my 2000 Durango. I can't wait to put on the Desnco 12582704 injectors. There are not too many things that can be done to improve the performance of the 4.7 as far as I know, other than the K & N air filter and the E3.48 spark plugs. Looking forward to learning more you! Great job!

[@martinbuilt]

Thank you, these injectors work really well once you add a few mods. I've got some other videos that you'll find have greatly improved horsepower and torque. Thank you for subscribing!

[@steelbak-customs]

I'm really enjoying your channel. My son and I are doing the top end of a 2004 4.7 Jeep Grand Cherokee. This is incredibly helpful and allow us to get it done.

[@martinbuilt]

Thank you Scott, I really appreciate that. I'm glad you liked it and found it helpful 👍

[@ahankararockband]

Great video, Martin. I have 2000 WJ, but with HO engine installed. We run it on lpg in Poland, because 1 liter of gas costs 1.5 bucks here😉. Cheers from Poland!

[@courtneymapel]

Your videos are always super helpful. I watched your timing chain video too and without that video I probably wouldn’t have been able to do it. Now my Dakota is missing on 2&4. I was told it’s lifters (without proper diagnosis) I’m just goin to do lifters and injectors to be safe. Thanks man

[@Lowdime]

Hey martin, i have an 07 jeep commander 3.7 and it pulsates under consistent throttle at highway speeds and after it gets hot and i shut it off and start it up again it runs rough then agter it sits again for a while i start it and it runs fine. Theres a code for a cylinder 3 misfire. Not sure if its the filter in the tank thats part of the fuel pump, a bad injector, or bad plug. Coils are all new.

[@gregj.gotham4402]

Ok I’m going to do the fast track learn mode in the late morning to hopefully get a better idel and running smother. New-rebuild engine, HO cams, HO intake, HO spring change over on stock heads, Denzo 12 Hole injectors, cleaned them out.

[@richardfresca221]

Changed the injectors in my '03 jeep liberty with the Densos you recommended. Went from 18mpg on the hwy to 22+ When I bought it, the avg mpg was 14. Lot's of work but it's running great. Thanks for the videos!!!!

[@martinbuilt]

That's awesome! 👍👍🤗

[@renegade9758]

@@martinbuilt hello its work for my laredo 4.7 2002?

[@Nonamestranger126]

I also have a liberty and interested in doing this . Did you run into any issues specific to your liberty ? After the install ?

[@richardfresca221]

@@Nonamestranger126 2Yrs W/No problems. But I've been running E85 about 50% of the time, so I no longer see a fuel economy benefit.

[@servantofyahuwah2486]

How about on Hemi 5.7 what part number to use for a 12 hole on the Hemi? Thanks

[@metalmaniaxx]

Dodge ram 1500 4.7 injector is super easy to change. I changed one on the fly while on a road trip from FL to NYC, in the advance Auto parking lot. The engine light came on and it was sucking up gas like crazy . Took me about 15 mins for one.

[@mitchwest6453]

PLEASE BE ADVISED, if you can't find this part number, an alternate injector is the 12 hole EV6. Even better, they are directly PnP, no need to modify the fuel rail. Provides the same amount of clearance as the stock injectors.

[@nate4036]

What did they come in?

[@patmaneely5519]

@Mitch West - Do you have a a P/N for the 12 Hole EV6 fuel injectors or the year/engine of the EV6?

[@allensnook7760]

Me too if i want new rather than used what vehicle n yr do i ask for that part?snooky pa.😊😊

[@ericlunneborg907]

Thank you for posting this. I wish I stumbled upon it sooner. I'm in quite the conundrum. I have a 2000 Dodge Durango 4.7. Injector no 1 had an open circuit when when hot. Found that the coil would open up if when the engine was up at full operating temperature. I replaced the no 1 injector (due to budgetary restrictions i was not available to buy a full 8 pack). It vehicle worked great for a week and then the no 5 injector developed the same problem (verified that with a meter). I did quick job for a friend and as payment he got me a set of injectors and injector pigtails off Amazon (I know not the best by a long shot, but I did a small favor for him and couldn't justify asking for much in return). I replaced all 8 injectors and the vehicle ran rough and acted like it was overfueling. I work as a diesel mechanic (19 years experience with Cummins, Detroit, MB, Paccar & CAT diesel engines). My three coworker friends in the shop highly recommended that i replace my oxygen sensors (they've never been replaced in my 16 years of owning that vehicle). I plan on replacing the two (yes i counted) oxygen sensors with OEM Bosch before I rip the cheap Amazon injectors out. On the procedure for relearning the PCM you had mentioned it may need 50 cold starts. Does that mean one a day for 50 days or a couple in a day's period? I am aware that i will have to change the oil a couple of times to be on the safe side. Thank you in advance.

[@martinbuilt]

Yeah I could see where using advice would work. Thank you for watching

[@ericlunneborg907]

@@martinbuilt thank you for responding. now what about the 50 cold starts?

[@brucewaldrop2933]

Really enjoy your videos Martin...hands-down some of the best how-to vids on KZbin! I'll be doing this upgrade soon in my daughter's 2002 WJ. Already been to the salvage yard and picked up 12 (few extra just in case) of the Denso injectors out of some Malibus...side note..all of the Cobalts with the 2.2 Ecotec I checked out had a 4-hole injector. I also clipped off a wiring harness that I will modify to make testing and cleaning the injectors a little easier. The rebuild kits are on the way and I will hopefully get this done in the next week or two. My daughter is looking forward to some increases in MPG (currently around 15 mixed driving). Thanks again.

[@thesetruths1404]

Any suggestions what to do next? Thanks! I have a 2007 Liberty 3.7L V6, 117,000 miles. Owned it since 67,000 miles. It operated perfectly for the first 30,000 miles and then it started getting a #1 Cyl misfire code P0301. It also seldomly gets a #1 cyl fuel injector circuit open P0201. It must be a very mild fault as the misfire freeze frame data shows it always happens at less than 350 rpm and when cleared it comes back immediately at next startup, cold or hot. So it seems to only happen once on startup as its moving up to regular idle speed. The miss isnt noticeable when driving or idling. Its getting 15.5 mpg fuel mileage. Doesnt burn oil. Doesnt smoke. Has great power. I've changed plugs and coils but no difference. Cleaned air intake, air filter, and ran cleaner through system. I've cleaned and inspected the injector plug and all wires but no difference. Dry / wet compression test of #1, 3 and 5 cylinders all read good: 160 / 175 psi. I'm wondering if there's a mild wire defect for that injector, or just a flakey connection somewhere. Has anyone tried to use a new set of compatible gauge wires and run them to a place closer to the injector control? I can't see where the wires go though. I'm not sure if I should just live with this, or troubleshoot it more. I don’t care about the engine light as we don't have emission requirements. Now that I know the compression is good, I'm not so worried about it.

[@thesetruths1404]

For my 2007 Liberty 90,000 miles was the Injector electrics. For some dumbass reason I didn't ohm the #1 Injector leads. When i eventually did, it ohmed at 148 instead of around 12.5. So that explains why I had low rpm misfires under 500rpm. Likely upon startups, bc it started and idles fine. Doesn't miss otherwise. Bought reman Denso 6-pack on ebay for $72. I'm just replacing that one Injector #1 bc I'm like that, so I'm gonna try to do that without having to remove anything but the #1 and #3 coils and fuel rail bolts on both sides. Maybe the air intake if necessary.

[@benwood1777]

Great video. Actually shows all complete steps. Probably best one showing how to swap the injectors on 4.7 Magnum.

[@michaelsutherland3981]

Great video. Explains it very well. I have a question. will the Denzo fuel injectors work on my 2009 Dodge ram 3.7 l

[@waterbreakers2343]

I did as you suggested, exactly and have a rough idle. I also changed the spark plugs and checked all vacuum lines for leaks. No codes but one newly replaced spark plug is black while the others are normal. Thinking I had a bad plug I tried a second set of plugs as I do not have the computer program to detect a bad spark plug. All this and still have the rough running engine. My vehicle is a 2000 Dodge Durango with a 4.7L, 4WD. I hope to fix this before you respond. However, I'd be interested in your suggestions compared to what the cause is or was. Best regards

[@martinbuilt]

It kind of sounds like 1 of the injectors are running rich. I have heard from others that these particular injectors may run a little rich on a completely stock engine. My engine had several mods, and it worked well.

[@waterbreakers2343]

@@martinbuilt I think you might be correct as 1 spark plug was black where the others were not . I am interested in how you are achieving 21 mpg in highway with ethanol gas. Thank you for your reply, I will check for that injector

[@waterbreakers2343]

@@martinbuilt a master mechanic suggested I disconnect the plugs and injectors and see if there is a change. I did this and cylinder # 8 seems to make the engine smoother.

[@hunterchesser9704]

I Need Big Help Martin! I got the 12 hole injectors took them to a injector cleaning machine they were good i installed them in my 06 dakota with the 4.7HO it ran fine the first start, the second time it is burning rich and misfiring very badly and tapping like a lifter tap please help!! I am going to put the old injectors back in and see I disconnected the battery and everything!

[@hunterchesser9704]

I found the problem i broke loose carbon when i did the injector swap and held the valve open momentarily and made the rocker fall out!

[@adelemartinez8235]

What would I do without you, Martin???!!! You make my life so much easier. And my independence is soaring! Much love to ya man. Thank you!

[@martinbuilt]

Glad to hear it, you are very welcome!

[@adelemartinez8235]

@@martinbuilt I’ve heard you say you live in the desert??? Where? I am in Arizona. I need your help. I can not figure out what is wrong with my Jeep. I am losing my mind.

[@martinbuilt]

@@adelemartinez8235 Las Vegas

[@adelemartinez8235]

@@martinbuilt oh wow. You’re 50 mins away.

[@adelemartinez8235]

Could you email me? [e-mail]

[@michaelcovington1844]

Yudamann, I enjoy yurr vids, I just replaced a thrown rocker, I hope yurr happy, yurr a blessing, I truly respect yu, my v8 is nolonger a v7 😂😂😂

[@Floki_mk]

good sir can i just say that you are just great man , ive had a fair amount of issues resolved easily because of your videos and I must thank you for that , keep it up man

[@martinbuilt]

Great to hear, and you are most welcome!

[@KP_4130]

Just wondering how many folks have done the denso swap and and experienced crazy rich conditions with -35% long term fuel trims?... I was so pumped to do this mod but unfortunately my 06 WK pcm wasnt having them. The only mods I have are a custom CIA and 3 inch exhaust with hi-flow cats and straight through muffler.

[@martinbuilt]

I have noticed anyone that has complained about a rich condition using these injectors has the NGC ECM apparently the four plug ECM does not have the tolerance to adjust for these injectors like the early 3 plug ECM.

[@josereyes-ki7lp]

Will a tune be necessary to run these injectors or just plug and play ready to go?

[@martinbuilt]

I've had some mixed reviews of using these injectors on a stock engine. I do have a few mods on this engine, and they work well on a stock ECM with no tune.

[@ctdope]

Just finished this job, NOT AS EASY for me as for Martin. My injector connectors didn't cooperate in being removed. I broke a bunch of the tabs that hold it to the injector. Then the injectors themselves didn't want to come out of the holes. I finally pryed off the rail, and 3 injectors came off and stayed in head, fuel spilled everywhere. The fuel line came off super easy with the special tool he used. Put everything back together with no drama, but not all connectors on injectors made clicking sounds. Fired it up after 1st start up procedure, it took a little effort. Did a test drive, seemed better and smoother, even idles steadily at around 600 rpm. The tranny shifts seemed very hesitant, and during idle it seems like there is more sideways movement, idk why like a split second pause. Anyway, hoping for more mileage, dont notice any more power, but it is smoother. Let's see after the 50 cold starts, only have 3 down. Haha. Thanks Martin.

[@allensnook7760]

Had the same issue those little red locking tabs get crumbly with heat cycles.so its easy to just snip out old clips and order from rock auto for 4.7l new leads.dont remember cost but wasnt to bad.wire colors are differant but i assumed dark one was ground or return signal,they seem like all work and lock in place,hope that helps,martin is wj-king.snooky pa😊😊😊

[@michaeljohn7405]

With a better mist and mix of fuel what kind of spark plugs and what kind of cool pack should we get.

[@danieljackson5658]

This video was really helpful in getting my 2006 dodge Dakota back running the way it suppose to run Thanks for a well put together video

[@forest0734]

Thanks for the video been thinking about doing this on my Commander. Precise and to the point.

[@johnscott9347]

What is the sequence to make dejected relearn?

[@hyperdukes7860]

Just started it up. I do notice a difference. I reset the module to recalibrate the air fuel mixture and I can definitely tell it's trying to get sime new data. She's running pretty rich

[@martinbuilt]

after the initial start up it will run rich until it can learn the new injectors

[@hyperdukes7860]

@@martinbuilt thank you for suggesting these injectors.

[@feltsmartin]

Your video is the best and most thorough I can find, thank you for taking the time to make a good video.

[@martinbuilt]

You're very welcome!

[@nalinpremaratna925]

Hi Martin I replaced with the Denso injectors on my WJ 4.7 …. I’m getting an error code 0172/0175 … difficult to start up as well … I believe this is to say fuel mixture is too rich I did replace the plugs and new ignition coils too… could use some help to sort the issue 😊

[@martinbuilt]

Your Denso injectors are they original ones or they some eBay Chinese knockoff? I've seen them on eBay a lot claiming that they're denso injectors but they're just look alikes and do not operate like the originals.

[@brettsanders8329]

Awesome video man. You’re great at keeping it simple and explaining yourself! Very professional

[@martinbuilt]

I appreciate that, I'm glad you liked it!

[@wernerswanepoel5898]

Just want to chear some info.. I am battling with my wj with some rought idle problems.. starting to change some sensors .. by switching the ignition 3 times on and of my jeep keep on showing “ done” which means nothing wrong ... today I have received my diagnostic tester or code reader ... the moment when I have plug the OBD reader into the car ... my wj start showing fault codes.. that means that although your jeep show done that doesnt mean there are no faults

[@VentShop]

Get a can or carb and choke cleaner and spray the intake butterfly as well as the intake idle air passage down and the idle will straighten out. Dirt and carbon will build up in those area's and it will choke the idle down till it starts to sputter and die but will run fine off idle. My 03 dakota seems to have the issue creep up about once a year and hosing things down and cleaning the butterfly off really helps. The last time I did it I used Seafoam and it seems to have lasted a little longer than just carb/intake cleaner did but the cost is a bit higher. I think it stays in there and cleans a little longer rather than just evaporating off and leaving crud behind.

[@The123easy123easy123]

My Dakota had a misfire and your vid helped me clear it right out thank you so much

[@martinbuilt]

That's good to hear. I'm glad you found the content helpful. thank you for watching.

[@boblawrence9947]

Martin, Thank you for all the helpful videos you post, they are so appreciated. I have a 2004 Jeep GC with a 4.7 HO motor. I’m rebuilding the motor and planning to use the 2008 intake. In my reading, you mentioned that the Bosch would be best in a non-modified engine, since mine is a HO with the 2008 intake, which injector would you recommend, the Bosch or the Denso? Thanks Again for all you do!!!

[@alaskatactical4457]

will this affect the horse power? just wondering if it will make it slower.

[@ar1913]

I was wondering if the fuel injector clips necessary for this upgrade?

[@martinbuilt]

technically no but, if you pull the fuel rail later the injectors may stay in the cylinder head and dump gasoline all over the engine.

[@pesnet7]

Hello! Mr Martin! About Jeep Grand Cherokee WJ year 2000. Would you know how to recover/open/replace the repair of the flute that houses the injection nozzles and which has a fuel leak at the junction of the communication tube with the rail tube of the 4+4 injection nozzles? In order to recover. It is not new on the distributor market, only used. In summary, how to open the junction of the communication tube between the pipe injector tube line? Kindly, can you help me, guide me? I am from Brazil. Thank you.

[@knobrush]

Is there a difference between your computer "relearn" process and simply disconnecting the negative cable for 30 seconds?

[@martinbuilt]

Yeah I would say there is because there is still the capacitors that are holding a charge in the ECM my technique drains any voltage from the ECM so it's forced to do a relearn

[@felixzacarias4999]

The denso injectors works great on my 2000 4.7 gc, it feels with more power

[@garyaj1010]

I just replaced with these injectors on my 99 WJ 4.7L along with manifold o2 and cats. Running like a champ now ! Love your videos !

[@martinbuilt]

That's awesome, glad to hear that it worked out for you.

[@MakaylaChildress]

I’m likely going to have to replace the cylinder 2 injector if my coil plugs aren’t bad and I just want to say thank you. This video is so detailed, gives great instruction, and shows every step of the way. Definitely makes me more comfortable to do it by myself because I don’t have the money to get it serviced.

[@martinbuilt]

Thank you, I really appreciate it 🙏. You are going to save a lot of money by doing it yourself.

[@MakaylaChildress]

@@martinbuilt This is the only reason I'm even going to attempt it haha! I'm really hoping it's the coil plugs gone bad, but if not, is there a way I can find a list of all the tools you used in this video? I'm not sure if we're going to have all of them, so I may need to purchase or rent a few kits.

[@Bluice002]

​@@MakaylaChildressdid you end up changing your #2 injector or was it a different problem? Curious because I've got the same code but I've also had a few electrical issues on top of it. I was searching upgraded injectors and ran across this and your comment was second in line. Figured it was fate saying reach out to this person lol.

[@MakaylaChildress]

@@Bluice002 It's been a minute since I changed them, but I think I remember changing about two coil plugs, one cracked in the process and then I changed the fuel injectors.

[@Bluice002]

@@MakaylaChildress Thanks for getting back to me on it, always helps to find others that have had similar issues.

[@kurtispastue3225]

Rebuild kits # for the denso please?

[@thomaslokers3497]

how can i order a set of injectors for my 2000 jeep grand cherokee limited 4.7 from you

[@LuisManuelHdez]

My 05 GC limited 4.7 has really gotten bad on gas. I get about 11 mpg on the street. Wondering if this would help.

[@JameyCampbell_54]

LuisManuelHdez I get 11mpg in my 2005 also. I used to get 15-16mpg. I'm Going to change the injectors and hope that's the issue. Good luck lol

[@LuisManuelHdez]

I'm looking to do the same soon. Just bought a new mopar fuel filter online really cheap too. Hoping like yourself to improve gas mileage. Unfortunately these cars are gas guzzlers and only get worse as they age.

[@JameyCampbell_54]

LuisManuelHdez I also have a 2006 that I lowered on H&R lowering springs and built 6.1L out of a wrecked 2007 srt8 wk1 , also removed the roof rack and that 4.7L wk1 got 16.5 mpg Roof rack probably didn't make any difference in mileage but it looks cleaner without it

[@LuisManuelHdez]

Jamey Campbell.. it would be great to get 16 mpg on the st again. Working on it. Those are nice upgrades.

[@hellcatrider7077]

Will this be the same procedure for a 2005 Durango 4.7?

[@steven6692]

Denso update! LOT'S of new power here Martin! Thank's men!

[@martinbuilt]

That's awesome, glad to hear it.

[@staticGenerator4You]

@@martinbuilt would love to hear how these new injectors affected 1) performance and 2) fuel economy. Can you give us an update?

[@WJsLifeonaBoat]

Considering doing fuel injector replacement on my HO. I can't figure out why I have a rough idle with the Doug Thorly Headers. I've done plugs, new coils, cleaned the throttle body, cleaned the IAC. No luck, no codes either.

[@martinbuilt]

try changing the fuel filter, then replace the injectors if that doesn't help.

[@WJsLifeonaBoat]

@@martinbuilt thanks Martin! I appreciate the feedback.

[@tannerkalp9650]

What are those little things called between minute 12 and 13 that you said are made for fuel lines, transmission lines, etc. and do I need those to successfully do this?

[@terrysmith8133]

would you happen to have a good set of 2000 grand cherokee 4.7 heads?

[@michaelring2028]

Thanks for the detailed video. I have a question for you. I need to replace a valve lifter on a 3.7 Jeep. Since I'm going that deep I thought I'd do plugs and hoses too. It looks like getting the injectors off the intake is straight forward. My question is, is the FI openings big enough for a endoscope camera to fit so I can check build up on the intake valves? Mike

[@windslicer5873]

Changed injectors on my 04 Jeep Grand Cherokee 4.7 last night. Thank you for the detailed instructions. Smooth process.

[@ernestoguereca4575]

hello is your jeep the 4.7 HO engine ? if so how are the injectors working for you. I want to installed them on my jeep as well. thank you

[@gregj.gotham4402]

Martinbuilt: does this fast track learn mode also need to be done to the 2001 xj 4.0 L

[@martinbuilt]

It probably should be done but to be honest with you I don't think I've ever done it before when replace the injectors on my XJ.

[@garychandler4296]

My 04' 4x4 Dakota has the 3.7 dog in it, 15mpg, no power. I have swapped the 3:55 for the 3:9's but nothing else yet as I'm an old Chevy guy. Not sure what would happen if I put the Densos in.

[@martinbuilt]

The denso injectors that I show in the video would be too much for the 3.7

[@ASwordOfTheLord]

​@@martinbuiltwell you answer people on here that rocks good for you brother

[@slm2hh]

On the Densos, would you have to change the fuel injectors plugs for 2000 dodge 4.7 durango?

[@martinbuilt]

For the 2000 Dodge Durango it should be plug n play.

[@slm2hh]

@@martinbuilt awesome, thank you Martin 👍👍😇

[@slm2hh]

@@martinbuilt I went on Amazon could not find Densos, however same spec by different manufacturer, ANGLEWIDE. Are these the same?

[@readchp]

Very clear and concise presentation. A very helpful video for me and greatly appreciated. From Tampa. Thanks Martin.

[@martinbuilt]

You're very welcome I'm glad you like it and found it helpful.

[@BigWood3131]

Thanks for the video and where is the cheapest place to buy injectors for my 2002 jeep Grand Cherokee 4.7. Thanks

[@beefboyhead]

Andy Elwood ebay

[@billjester]

Completed this upgrade on my 2006 Mitsubishi Raider and it runs like a new truck now, great and informative video Martin.

[@martinbuilt]

That's awesome Bill, glad to hear it worked out for you.

[@robertemmons2260]

Great video! I've already replaced the injectors on my old '02 Liberty Sport five or so years ago, so I've already got the process down. Back then I had used the Neon injectors for the upgrade, and I did notice an increase in power, but still rather poor fuel mileage of @15-16 in town and up to 23 on the highway. Just last month I had picked up an '02 Liberty Renegade for only $1000.00 with a blown transmission. What I had watched the video for was to find out what injectors that you had used to achieve those MPG and performance gains.

[@chrissnyder2726]

@martinbuilt I have looked through the comments before asking but I have a 2005 Dakota 4.7 magnum and was wondering if the Denso injectors would work on my truck? It runs good but has 130,000 mile on it now. Just wanting a little more power!! Thank you for your help!!

[@martinbuilt]

I would stick with the injectors you have I have heard some comments of people with the newer ECM like yourself where it will run rich I believe the newer ECM doesn't have enough tolerance built into it to compensate for the extra fuel that these injectors could deliver. If you had a modified engine with bolt ons like the 08 cams, intake manifold, larger throttle body, free flow exhaust then the denso injectors would probably work well.

[@hunterchesser9704]

CAN YOU USE THESE INJECTORS WITH THE H.O??? I put them in mine after cleaning and flow-testing the injectors and it still made me hydraulic my engine and snap and rod… i dont know if its because of the tune on the h.o or not please someone help!

[@martinbuilt]

If the injectors were working properly it would never hydraulic an engine ever. Sounds like one of the injectors were leaking severely.

[@mistermusik]

What a great channel. I’m going to try this on my 08 Liberty 4x4. The stock gas mileage and power are really lacking. Thanks.

[@martinbuilt]

Thank you. This injector may be a little much from a 3.7L V6. You may want to go with the Bosch 280156161 injector.

[@betterthanyou2894]

How much does these injectors Improve mpg cause I have a 2002 dodhe ram 1500 4.7

[@martinbuilt]

You should see at least .5 to .75 MPG minimum. I've had a lot of people tell me they got more than that.

[@johnfeather-o5x]

I have the same jeep as you. I get 13.5 gallons per mile. Would using these help make it better or what would? Thanks

[@terrysmith8133]

my 2000 grand cherokee gets about 15-16 mpg. what did you do to get the 20-21 mpg?

[@martinbuilt]

It was a combination of many things. good plugs, new injectors, free-flow exhaust, and performance intake. And drive sensibly. I also shift into neutral every chase I get.

[@grlnboots]

I installed the new Bosch injectors, vehicle is not idling and smoke pouring out of pipe. Any idea?

[@martinbuilt]

If it didn't do that before you installed the new injectors I would think that one or more of those injectors are no good.

[@mikajones3018]

do this engine fire all injectors at the same time >>??? mines does this

[@martinbuilt]

No one at a time at the appropriate time. I've never heard of an engine that fires all injectors at the same time. That would be a huge waste of fuel and could cause backfiring and all kinds of other problems. Thank you for watching.

[@clintstites]

Martin- can I just grind 1 corner if rotating one position. If so- which corner?

[@martinbuilt]

I'm not sure that would work and I don't know off-hand which corner it would be. 🤔🤨

[@terrysmith8133]

you reply with a combination of things, but did injectors make the biggest difference in mileage? if so about how much?

[@martinbuilt]

If I remember right I believe it was 3/4 of a mile per gallon better with the new injectors. And have heard of other people gaining as much as 2 miles per gallon better.

[@leomirtafaj7662]

hello i have a jeep wj 4.7 and i wanted to increase its power can you tell me what is the best way or what are the best injectors for power increase?

[@martinbuilt]

If you haven't done any other mods, I would try the Bosch 280156161 injectors or the 4 hole Green band injectors found on some of the 4.7 engines

[@SirArcticPB]

Any help guys??? Will I notice a difference in running after resetting the pcm??? I bought a new throttle body I'm waiting on. But I just replaced all my fuel systems, sensors around the whole jeep, I put new coil packs and spark plugs. Now I'm going to try a new throttle body... she starts up fine, but as soon as I start to drive and come to a stop wants to die and rpms drop..? I thought new injectors would fix this but no... So hopefully new throttle body works??

[@phillanassa759]

So, in your experience, which ones are the best overall match, without the computer getting funky, or setting a CEL? Would you (which would you) recommend for non-modified 4.7's..? Or would adding the HO cam's/Intake/heads work better,.. with which injector? I'm looking to improve the injectors in both my '00 4.7 (vin N) Durango SLT 4X4 , 231 Xfer case, 545-RFE , 3:55 gears, as well as those in my latest project, a '02 WJ Limited 247 Xfer case, 545-RFE and 3:73's..which may end up with a 242 HD Xfer case..

[@martinbuilt]

I would go with the Bosch 280156161, they will work with both stock and modified engines.

[@justindaniels17]

Is there any alternatives because in South Africa there is no 2.2 or 2.4 ecotec engines and there is no 2.3 duratec engines either is there any other alternatives? I've got a 4.7 HO engine trying to improve fuel economy and increase power

[@martinbuilt]

Try the Bosch 280156161 injector. Found in many ford compact cars with the eco boost engine

[@hogdoghd]

So i have my denso 12 hole fuel injectors but the plastic end is broken off. Where do i get the end caps for these injectors? I cant find them anywhere.

[@timothygarza3699]

Hello, just wondering if you think it would be ok to run the densos on a 02 ram 4.7 Thank you for the video

[@martinbuilt]

Yeah, I think they will. They definitely work better with an engine that has some modifications. Another good choice would be these, Bosch 0280156161 240cc@43.5 They would work well with a stock and modified engine.

[@timothygarza3699]

@@martinbuilt I looked online and couldn’t find any at a decent price but I did get the ones you used in your video, and they seem to work pretty good. I put jba headers on it, airaid intake and hypereutectic pistons and moly faced rings. All turned out good on the startup

[@RobTasha]

i have a 04 jeep grand cherokee overland with a 4.7 ho. would the injectors be the same for the ram 1500 4.7. i’m asking because my jeep engine is bad and good for parts but not sure if it would be a fit to to dodge?

[@martinbuilt]

They may be a different part number but as long as your Dodge 1500 is a 99-07 they will work just fine.

[@Artecd]

I installed fuel injector 12582704 on Durango 2 4.7l LTFT bank 1 and 2 became -17 - 25. But everything is fine, the city is 16.5 liters and the highway is 13.5 per 100km driving has become smooth. But the fuel correction of -17-25 is confusing, once there was an error P0172 and P0175 (one time after three months)

[@mlubnani]

Same problem. A Lot of martin's fans have -25% fuel trim and not have idea

[@Artecd]

I removed this injectors and install another 12 holes 0280156161 Good. Try it.

[@bugrakkabakci]

@@Artecd no more engine lights after 6161?

[@Artecd]

All good

[@johnsabaku2257]

Awesome instruction video and great reminder of how to reset the ECM

[@martinbuilt]

Thank you I'm glad you liked it and found it helpful.

[@otorres079]

great content @martinbuilt , do you know if this would work on a 2008-2012 jeep liberty with a 3.7? thanks in advance

[@richwilson7017]

Hello Martin thanks again for these helpful videos I put in the 12 hole injectors in my Dodge Dakota. My fuel trims at idle are around -20 or so give or take. I don’t know if these injectors have something to do with it it’s on both banks. When I put the vehicle under load the trims even out. I was curious if you might’ve had this happen when you installed them I did do a quick learn. Thanks!

[@mlubnani]

Same problem. Not response. My friend had same problem too. -30 long trim .

[@user-km4xm4br8l]

Didn't catch the results of the Denso 12 hole? Better milage?

[@martinbuilt]

yes I got better MPG's but these injectors may be best suited for modified engines.

[@user-km4xm4br8l]

@@martinbuilt Great thanks for the info. I have a 00 4.7 looking for mileage. I would like to keep the stock airbox. Does the 4 hole (forgot the part#) a direct fit. Love the info!

[@martinbuilt]

@@user-km4xm4br8l Yes the 4 hole green band injectors are a direct fit. Another good injector to consider is the Bosch 260156161

[@user-km4xm4br8l]

@@martinbuilt Wow thanks for the help! Do you have a website with a resource page? Or I can just watch them all again taking notes lol

[@user-km4xm4br8l]

@@martinbuilt I like the thought of keeping it within 12 ohm rating.

[@unknownshopper4024]

Just finished my 2004 Durango ‘ the low priced injectors from amazon where a bit shorter than the original but they are working great. Thanks for the good video

[@prior8t2000]

When aof Fuel Injectors are replaced and installed... Is there any Computer -- PCM Update or maybe a RE-Flash the Comp - PCM... Tanks..

[@martinbuilt]

yes, I explain at 28:12

[@mikelong2856]

How is your gass mileage now and performance

[@rodm5830]

Martin, I know this is an old video but I’m wondering if how these injectors worked for you. Mileage and computer and all. Or is there a follow up video.

[@steelbak-customs]

How do you learn about the mods? I have no idea about using different injectors and such. I would love to learn more - and learn how to learn it, lol.

[@martinbuilt]

I just did some research on injector specifications and found that these we're very similar as far as cc's per minute and the ohm reading was also the same. Thank you for watching 👀

[@ocavant]

Just checking. So these Denso's don't have a spray pattern orientation? Some do and some don't.