1999 Toyota 4Runner Misfire Diagnosis Story | How I Finally Fixed it

[@Kingfisher1060]

I'm 65 years old and I'm on my way home toright I noticed by vehicle Toyota 97 V6 started missing right away which I found strange because I take very very good care of this vehicle difficult and your video has helped me out so much I cannot even describe to what level.. You have explained this to me within a few minutes and have saved me hours and hours and hours of speculation And hopelessness you have turned that into a great vibe and all I can do is put you In for great karma once you get to the Berkeley gates

[@4WheelKid]

glad the video helped you out! so much appreciated

[@whocares4464]

Third gen 4runner one of my all time favorite rides ever!!! Just got done doing a timing belt!!! So I'm good for 100k

[@gcxred4kat9]

Wow, impressive diagnostic skills there young man!

[@4WheelKid]

thanks! I was not as good with this back then but I learned so much more from this and after

[@jvogler_art4708]

Ty for posting this, going through the same issue right now, you've done very thorough research. I threw ignition coils, plug wires, and i already had new plugs in it thinking it would fix it. It didn't. Once i pull it from the shop i took it to if they couldn't find anything i'm gonna try what you did.

[@4WheelKid]

no problem, I have learned so much about Diagnostics since this video. best to test not guess if you can. best of luck

[@bravethewildgaming8139]

Your in-depth diagnosis is genius! The light idea was awesome

[@4WheelKid]

thanks so much! I learned a lot from this. had another one of those reman injectors stick open on a trip. had to replace all with brand new oem from the dealer. no problems since

[@bravethewildgaming8139]

@@4WheelKid our good friend is gifting us a 96-97 4Runner that’s been sitting for a few years, and so I’m hoping with a few dabs of marvel mystery, fresh gas, charged battery, it’ll smoothly crank on and I can just run the cobwebs out. Hopefully the spark plugs aren’t as hard to get to as my ‘01 Mitsubishi Montero Sport…. Full intake manifold and a bazillion lines just to changed spark plugs.

[@arechj]

Awesome video! The lightbulb in the injector idea was too cool! Glad you figured it out! I’m getting a P305 after timing belt replace and hopefully it will be easier to solve than yours!

[@4WheelKid]

hey thanks! thought it was worth sharing what happened. yeah neat to see the injector order in real time. darn hopefully it's an easy fix

[@shkaat]

Same! I just got a misfire code after the shop did my timing belt and valve covers. Did you figure out what the cause was?

[@zh3717]

@@shkaatsame! Mine drives perfectly but will misfire only upon warm start up. Did you figure out your misfire issue. And again just to confirm mine started doing it right after a valve cover gasket replacement

[@shkaat]

@@zh3717 Hey! yeah after a whole bunch of failed tests, swapping coils and wires, I finally replaced the injector in Cylinder 3 and that solved it. hope that helps you out too!

[@zh3717]

@@shkaat awesome… I just bought all new Toyota injectors and am feeling confident now that will solve my mysterious warm only misfire/. Thanks!

[@heftyjo2893]

This is where one of those little OBD scanners connected to the Torque app on your smart phone can help with finding if it is a stuck infector. You'll want to look at the Short Term and Long Term Fuel Trims. If the Long Term Fuel Trims are showing a negative value then it suggests that the ECU is constantly having to pull fuel out of the system to keep the engine running at the proper air/fuel mixture. In other words the engine is running to rich with fuel when the fuel trims are negative. That's when you might start to suspect that there is a leaking injector but could also possibly be a failed fuel regulator. Checking the fuel pressure is a good diagnostic as it'll show if the fuel pressure is bleeding down from a leak or if the fuel regulator fails to adjust pressure with engine RPM.

[@4WheelKid]

For sure a great idea! I learned all about fuel trims later on. And helped me diagnose my van, fuel trims are such a great diag tool

[@heftyjo2893]

@@FonzoCapone Short term trims just show how the ECU is adding or taking fuel out of the injector pulse at that immediate point in time. The Long Term fuel trim is essentially an average of the short term fuel trims over a longer period of time. So, the Long Term trims shows how the computer has been consistently managing the fuel delivery over a long period of time as so are a good diagnostic for the fuel system as a whole. Short term trims I believe can be useful if you are diagnosing an O2 sensor.

[@FonzoCapone]

@@heftyjo2893 and im getting a code for cylinder 4 misfire. New spark plugs and new wires

[@antiflag46]

Did you check the dashpot vacuum line? It may not allow smoke out, but it could be loose enough to cause a cylinder 6 misfire as it feeds directly into cylinder 6 runner

[@4WheelKid]

it turned out to be an injector issue

[@f3nixfire]

I have a 99 4runner with 224k on it. Ran beautifully until acouple weeks ago when it started misfiring on my wife. It said cylinders 1 and 6 were misfiring so I replaced all the spark plugs, which it actually really needed them. I used the NGK Iridium IXs. However, it was still misfiring, but not all the time, only sometimes. I replaced all 3 coil packs and the waste spark wires with NGK units. Still misfiring after that even. I just bought a fuel filter so I was gonna replace the fuel filter and flush the injectors and see if that did it. I dont really want to replace the injectors but I may have to. If I do, I'm just gonna go with Densos to avoid any issues with cheap crap. Great video! Good to see we had the same line of thinking.

[@4WheelKid]

darn sounds like a pain. hopefully your able to figure out what's wrong with it. be careful buying what appears to be name brand injectors on eBay and amazon. those are usually knock offs. the oem injectors are made by aisin might also want to replace the fuel pump while your at it if it's never been replaced before. another stuck open injector left me stranded a few months later. I ended up replacing my entire fuel system with oem parts

[@Glocktard]

I’ve had spark plug wires actually go bad.

[@f3nixfire]

Well I figured out the issue. The injector in cylinder 6 was bad. Bought 6 new injectors and replaced all of them. Truck ran great for a day and then it started running like crap. Tear it all down again to find that the injector in cylinder 3 was stuck open and dumping fuel in the cylinder. I contacted the seller, and they were super cool. They refunded me a third of my money and I got a new injector to replace the bad one. Installed it and havent had an issue since! It's been about 2 months now and its running beautifully! Great thing is I've got a brand new cold air intake, fuel filter, new injectors, plugs, coil packs and wires so I should be good for quite some time now. 😊

[@4WheelKid]

wow that's crazy you had one stick open as well. which brand did you go with? where did you buy them from. hopefully you don't have another stick open. I would really like to figure out why they stick open in the first place. best of luck!

[@f3nixfire]

@@4WheelKid Ya, I bought remanufactured OEM injectors. Still running great after replacing that one.

[@Tankerpaul223]

RockAuto has sent me poorly fitting parts as well. I've had better luck with Summit Racing. Thanks for this video, I am dealing with this on my 96 right now.

[@4WheelKid]

yeah it's annoying, I bought carpet from them and they sent me the wrong carpet in the right box. they do have a good selection though some stuff they sell is garbage and some is good, really gotta do research. can save a ton of money compared to the box stores where they inflate the price like crazy for the same exact part, mostly on the commonly sold ones. best of luck, My 4runner has been perfect for years now after using oem injectors

[@nightdipper5178]

Had #3 misfire on my 99 4r, initially replaced the Fuel injectors but that was not the issue, it was the TPS. #3 spark Plug had a carbon stripe (1-2mm) down the exposed porcelain causing a misfire under acceleration. Replaced #3 plug, ran good, but the carbon streak and misfire returned to the #3 plug within a week. It was the TPS, once changed along with a new plug, all was good. From my research this has occured on other 3rd gens. No idea why this occurs from a bad TPS but it does, so if it's not the coil it may be the TPS, if there is a carbon streak on one plug.

[@4WheelKid]

thanks, could be a lot of different reasons

[@johnr7717]

Hello, I have the p0301 code misfire in cylinder 1. I also noticed my coolant is empty in my reservoir and my radiator. Any advice. I'm replacing wires plugs and coil packs.

[@4WheelKid]

I would figure out where your coolant is going before spending money on anything else. you may have a warped head with a blown head gasket. do a combustion leak test before doing anything else. kzbin.info/www/bejne/fYXXqmN5idWIe8k

[@smrtnz5995]

Was it a cracked head? Milky oil indicates that.

[@johnr7717]

@@smrtnz5995 no, it was a blown head gasket.

[@nshunta808]

Had that same issue with a 97 Tacoma. I Did EVERYTHING IN suggested on the internet and it still didn't fix the problem. In the end it turned out to be a capacitor had leaked in the ECM.

[@4WheelKid]

oh wow. that's no good. hope a new ECM didn't cost too much

[@inmerduran1147]

Dope! Currently troubleshooting my 2000 4Runner so far things are pointing to a bad fuel injector.

[@4WheelKid]

for sure! whatever you don't don't buy the remanufactured ones haha

[@JulioMorales-ew8sc]

My 99 Toyota 4 runner 4cylinders not power runs poorly? I replaced plugs, wires, fuel. Filter, fuel injectors,TPS sensor ,MAS sensor, new Catalytic, new exhaust manifold, still not power on first gear, any thoughts?? Thanks!

[@4WheelKid]

Check your compression

[@crosleyfiver000destruct0]

Man, I"m going to put some MMO in my tank now to clean my injectors, all original and running fine at 205k miles. I ran bosh plat plugs , single electrode for 80k miles with no problem. Now have NGK Iridiums and runs fine. Good to know about the remanu injectors!

[@4WheelKid]

nice! good idea, probably good to run an fuel additive at every fillup, keeps things clean. what a nightmare that was, no issues after going all oem

[@tyee4u]

I did a winter tear down on an old shovel head Harley one time and when I got it all back together it wouldn’t run worth a shit and I couldn’t figure it out. My old timer neighbour heard me messing with it and came over and listened for a minute and said “that sounds like a dead spark plug” I’m like what, they are bran new. He said that doesn’t mean anything. Anyways go get some new plugs and pop them in. vroom Vroom. Ran like a top. Great advise. Never trust that your bran new parts might not be the problem.

[@4WheelKid]

for sure, never want to rule anything out. especally with cheap parts haha

[@jimmyfavereau]

Dang Kid! the patience of a saint! I got a 2000 with a misfire, the misfire that didnt start till I cleaned the motor, gentle rinsing with a pressure washer which Ive done 1000s of time over the years detailing cars.. any thoughts? oh and the same exact thing happened with a fuel filter i replaced from am0zon, ECOGARD XF44710 Premium Fuel Filter , after 3 days I noticed a drip , i checked and tightened the connection while it was still installed but it still leaked???, I unmounted it and inspected, couldnt find a fault so I put it back on and gorrilla'd the connection. so far so good.. thanks the vid, WELL done!

[@4WheelKid]

thanks! haha wasn't as good at diag but this helped a lot an i'm much better at it now. if it started happening after pressure washing the engine, I can almost garuntee you got water in one of the spark plug tubes causing a misfire. glad you got the fuel leak fixed. the one I got had the wrong size fittings. I really like the quick disconnects on my ford van much better

[@jimmyfavereau]

@@4WheelKid appreciate the info young man, I also have a 2000 toyota echo with 334k miles.. the windshield washer nozzle is just above cylinder 1, at one point in time, I removed the plastic shield which covers the top of the engine and didnt put it back, after heavy downpour, the water dripped in and onto the valve cover, then seeped into the spark plug cavity and exactly as you said, it caused intermittent misfire.. so on the 4runner I thought I was being extra careful about getting those boots wet, I checked cyl 2 and 4 and they were bone dry ill pop them all off and look closer but that is the exact symptom I was getting back in the day.. thanks for the reminder : ) I replaced the fuel pump 3 weeks ago (new) on this 4runner, and then two weeks later it stopped working again so I thought it was faulty, resistance reading was like 160ohm range on pin 4 and 5.. so I drained the tank again and removed the unit, a real pita on the ground, then pulled the pump out and is was covered with white corrosion??? when i disconnected the internal connector and measured the resistance it was on the money and she powered up! ya, i carefully cleaned the terminals , put a thin coat of grease on them and reinstalled everything and she started right up, THEN i cleaned the motor, a very light dusting and of course the misfire lol this 3rd Gen is def like a tank! and toyota product is tight! I did change my timing chain on the echo when she was at 332k.. it is suppose to be timing chain for life but I wanted to do it anyway.. when I put the old and the new side by side, you could NOT tell them apart.. ZERo wear! thanks again and ill keep you posted : )

[@layziesoiczy]

Man I'm struggling to fix my 02 4runners. I've change the spark plug wire, ignition coil and change spark plug 2 twice just find out they need a dual. Still idle rough and has a hard time driving. Took it to a shop and said cylind er 1 and 5 are having a mis fire and they say it's the fuel injector since everything else is good. I'm planning to change all 6 but im on a budget spending close to 3k already. I've seen a after market Denso injector for $50. Should I go with that? I don't want to spend $200+ for 1 injector

[@fishingautos8585]

Sounds like a bad coil

[@4WheelKid]

darn sounds like your having a rough time. could be an injector but could also be a wiring issue like rodent chew or something, don't want to rule that out. I looked at a trade-in at work one time where the oil pressure light was on constantly. someone had already replaced the oil pressure sensor and didn't fix it. they probably traded it because a "Mechanic" said it needed a new engine. I followed the oil pressure sensor wire and under the airbox, there was a mouse nest and they had chewed the wires up. I repaired the wires costing my work next to nothing and it was fixed. Before you go any further if not done already I highly recommend compression testing all cylinders to make sure the misfire is not a mechanical issue so you don't waste even more money and that way you know for sure it's either a fuel or spark problem. Also, the misfire numbers are not always accurate on these 3rd gen 4runners. do you have a link to those Denso injectors? I couldn't find any densos when I was looking. I just don't want you to get fake ones, because there are a lot of those out there. I also got OEM injectors from Toyota, for about 160 each, I ask for the dealer-to-dealer wholesale discount because I work at a nearby dealership. they always give me the discount without question. The oem injectors are made by aisin. I also dropped the tank, cleaned it out and checked for rust, replaced the pump with a Denso because that is oem. replaced the fuel pressure regulator and all 6 injectors with oem, and a wix fuel filter, now I won't have to worry about anymore fuel problems for another 20 years.

[@layziesoiczy]

@@4WheelKid thanks for the reply! I had a reliable mechanic that my cousin refer me to. Looks like this whole time it was a timing belt issue. Got the whole timing belt and water pump replace for 1k and it's running like a Champ! FYI the car only has 85k for an 02. I had bought it off my mom and she barely drives it only to work and home. And she had a few collision from the front end but nothing serious, only a dent in front of the bumper which im planing to replace with a metal bumper kit.

[@4WheelKid]

hey glad you got it figured out! did it just skip 1 tooth or something? that could for sure cause the issue. That's why I checked my timing. that's super low miles. these 3rd gen runners keep increasing in value it seems. just did a full timing belt overhaul on mine. runs great. have like 170k miles on mine. now it just needs some front steering and suspension work and it will be good. and some paint work haha. cool how much did your bumper kit cost? best of luck

[@gionandrivenditto8618]

Hello friend, greetings from Venezuela, I have a 1998 4runner 4x4 5vz, I changed the timing kit and it stays accelerated at 1100rpm, what could I do?

[@4WheelKid]

Hi, im not sure, if it didn’t have that problem before then its probably something you did to cause it or didn’t plug something back in.

[@samirali8884]

I'm having the same issue. Crazy backfire and car won't run, stalls and dies. The strange thing is only happens when raining outside. But ever since the last snow storm it hasn't ran since. Any advice?

[@4WheelKid]

Could be a lot of things, maybe its electrical. You gotta learn the diagnostic process

[@rh9967]

Anytime replacing critical parts I would recommend buying oem off Toyota’s genuine-parts website. I do this often and have never had a part fail. They are expensive, but you’ll likely never need to replace them again.

[@4WheelKid]

For sure oem is the way to go

[@diegolinan-guzman9632]

Hey! Nice troubleshooting! I have a 99 4Runner with 198k miles and recently I started getting the p0300 code along with cylinder 1, 5 misfire. I replaced the spark plugs the wiring and I’m down to looking into the fuel injectors, for what I could tell the fuel injectors are the originals so maybe they are failing now? Idk I’ll have to keep trying to figure out why I’m getting the misfires and the rough idle(rpm drop so low seems engine is about to stall). So I’ll try doing what you showed in the video! Wish me luck!

[@4WheelKid]

thanks! yeah it's best to learn how to diagnose things properly, I made that mistake at with this issue at first. I will always dig deep in diagnostics from now on. best of luck! start watching this guys youtube channel. youtube.com/@schrodingersbox?si=Xc_Qigbde8BLmEdt use this scenario to start learning theory and real diagnostic Techniques

[@masseysan]

I'm curious to hear what came of this. I'm in the same boat, and running out of troubleshooting ideas.

[@diegolinan-guzman9632]

@@masseysan hey there, well I replaced the injectors with the Timmy the Toolman used and rough idle and p0300 code still comes up- this weekend hopefully I’ll work on replacing the PCV on the engine since recently started seeming some smoke coming up from the engine (might’ve been there before but recently idle got worse and now smoke is more visible so if I get the new valve cover in this week I’ll do the job and see if that changes anything.

[@masseysan]

@@diegolinan-guzman9632 I wish you the Best of luck! As for my situation, I think I've narrowed it down to one of two things, either the timing belt has skipped a tooth (was recently done by previous owner) or there is a slight coolant leak in the intake manifold (head gasket looks good, no chocolate milk, no exhaust in the cooling system).

[@hankhill3417]

I see you are in Colorado. These go for $10k even a beat up one with 300,000 miles. Thanks for video

[@4WheelKid]

Yeah I got lucky and picked this one up for $5000 like 7 years ago 4x4 limited with 129,000 miles, just did a full timing overhaul, with aisin timing belt, pulley and water pump kit, new toyota camp and crank seals, new thermostat and radiator as preventative, the rear suspension has been replaced with 1.5in lift. Toyota axle bearings and seals have been replaced. Just needs front end suspension and drive line overhauled and it will be in near great shape, could use some paint work too.

[@chrisuceda9268]

So you need to put OEM injectors you can’t put aftermarket injectors, because if you put aftermarket injectors is not going to work, right?

[@4WheelKid]

that was my experience. not worth the risk with injectors, those cheap reman injectors could easily ruin a motor jamming wide open like that

[@charlesyii8963]

I have p0304 and my 99 is fine when in cold start, after the engine is warm up and it will misfire when I turn the key off and on again , I have replace oem stock spark plug wire and spark plug but still did that. Any idea? It happen to me after I have a long ride from Chicago to Florida

[@4WheelKid]

see if you can put a spark tester on each plug while your having the misfire. could be a coil pack potentially, but you want to figure out if it's fuel or spark. probably not a compression issue since it acts up all the sudden after start and restart. another thing you could do instead is after it misfires for a bit, pull all the spark plugs to see if a specific one is fuel soaked, that will narrow down which cyl it is. does the check engine light come on? that might help but I hear these older runners are not very accurate at detecting the correct misfire that is missing

[@charlesyii8963]

@@4WheelKid thank you for taking your time to answer me , it light up p0304 then it go off again after 10 15 mins, maybe injector u think 4th cylinder ? Try to swap it out once the injectors shown up . Did the coil too , no luck . Have to tow from Destin Florida to Chicago at the end .

[@cjk9416]

@@charlesyii8963 did you ever figure out what was wrong?

[@charlesyii8963]

@@cjk9416 it was my injector , swap it out , drive like brand new again .

[@4WheelKid]

glad you got it figured out!

[@DoctorDification]

Thank you , I replaced wires, plugs and Rock auto cheaper injectors not that many miles ago. Car sits a lot now and began to misfire when started and then would suddenly clear up and run great, sometimes dropping back to misfiring. Now It wont clear up. The misfire is horrible. The thought of digging down to the injectors depresses me. Tried running injector cleaner but perhaps its not dirty its just a piece of junk that is stuck closed I guess ? Rats! leaking steering rack now and master cylinder. Wow . I love this 99 4runner but its getting to be a pain and the rust is so bad my mechanic wont put it on the lift.

[@4WheelKid]

Yeah those junk injectors are so sketch, you want to try and figure out if the injectors are actually the problem or not. I learned from my mistake and now diagnose problems properly before replacing parts. If its that rusty it might not be worth putting a ton of money into it, I spent like $800 on new oem injectors, and replaced my fuel pump and filter just as long term preventative. Been running perfectly ever since. Its sad because when I go to the junk yard here in Colorado there are 3rd gen 4runner frames that are mint with no rust and look brand new but people cut them to get the engines out easily. Its really too much work to replace a frame usually but idk now since used cars are worth so much now

[@sambo314]

Where do you reccome d we buy fuel injectors from? In looking at a place called CarID Also, i think the fuel injectors im thinking of buying are GB manufacturing so idk if i should change

[@4WheelKid]

I would just get oem toyota injectors, that's what i'm doing now. I just had another GB manufacturing injector jam open on a road trip. had to tow it back. now I have to shell out the money if I want my 4runner to be reliable

[@bar20bbq70]

as soon as you broke out those GB fuel injectors I understood why you have the blue plug wires, good luck. btw. you wannna sell it?

[@4WheelKid]

Yeah ill sell it for $20,000

[@yoguttier3324]

Where do I start? I have 95 4runner 170000 miles it starts and runs fine but after running for over an hour I stopped for about 30 minutes then restarted it but it was shaking a lot and couldn't stay on unless I stepped on the gas. I let it rest overnight the next morning I turned it on and it was running fine. I usually don't run it for long long because I live like five minutes from work. That day I took it out to go hunting so I was stranded up in the mounting overnight. I'm gonna do a full tune up, beyond that is beyond my knowledge. Any tips?

[@4WheelKid]

do you have any obd codes?? maybe even a pending codes. it's possible you have an intake leak somewhere. but I would read codes even if it's pending. might point you in the right direction

[@ericmoss6321]

I have a 99 started missing someone missed 2 spark plugs during a change has 322k on it and was driving everything shutoff except the engine drove home and now doesn't start

[@4WheelKid]

dang, gotta start with the basics, maybe a loose connection somewhere?

[@ericmoss6321]

Alternator went bad burnt the 120 Amp fuse.

[@Coleslawbreakfast]

My Gen 3 has random misfire and downstream too lean. I've put plug, wires, coils, cam sensor and cleaned MAF sensor. Looking at injectors is next. I have learned to buy OEM (Denso) and haven't looked back.

[@4WheelKid]

could be an injector but could also be something else. I learned to test not guess with this experience. yeah OEM is best unfortunately the oem brand doesn't sell these injectors outside the dealer

[@kyleberlin6990]

I cant decide if i love these trucks so much that I would do anything to continue driving them or I'm a glutton for punishment...just did valve job, still having misfire and engine cuts out. Timing checks out. Might check starter solenoid before I go any further

[@4WheelKid]

dang, it's gotta be something, Fuel, air/compression. and spark... it's one of those things

[@bar20bbq70]

yea, def. starter solenoid.

[@ddluhy8722]

Hey man just put a new engine in my 99 3.4L 325,000 miles new spark plugs and wires having minor issues only in gear In reverse and drive has a small jolting issue wondering if I should replace my injectors? Or run maybe a fuel induction service on it? Only does it when crawling around 1-2mph then goes away when accelerating.

[@4WheelKid]

could be a lot of things. are you sure it's not transmission related? I would start with smoke testing the intake

[@smrtnz5995]

Driveline - u joints. Slowing down to stop then clunk.

[@brendanschroeder1862]

Anyone know how to get the operating temp of these engines with a IR gun? I’m getting different readings from top of rad hose, top of rad, valve covers...

[@4WheelKid]

all the different parts are going to be different temps somewhat. what are you trying to accomplish exactly? you can view your coolant temp in degrees on a scan tool

[@brendanschroeder1862]

@@4WheelKid I just ordered a scan gauge actually. Basically I’m just trying to see if the engine is running at good temps. Just bought the rig, didn’t come with any mx history, and when I turned the heat on it was really hot, so my ocd kicked in and I was wanting to monitor the heat haha

[@caryaho7034]

I bought a 97 4runner for my wife 3 years ago and it had a random cylinder misfire and after a long time of trying to diagnose it l finally found out my alternator was weak and that was causing it.

[@4WheelKid]

Yeah could be a lot of things

[@trolzealot8635]

Hello friends, someone link or web address where I can get the new original OEM injectors - Aisin with warranty for the 4runner 1996-2002, greetings and excellent video

[@4WheelKid]

Yeah best thing to do is work for another dealer then go to the Toyota dealer and ask for wholesale price. Maybe able to type part numbers into google and find them that way. Too bad Aisin doesn’t sell these aftermarket. Just watch out for fakes or reman

[@undyingvisage58]

doing my 6 next weekend maybe. definitely buying an extra injector just in case now XD. good thing you came across that flame from the bad injector. you inadvertently showed us a cool diagnostic trick. awesome makeshift NOID light by the way if you didn't know that's what you essentially did.

[@4WheelKid]

Nice best of luck! For sure haha, yeah didnt want to buy 6 actual noid lights

[@gcxred4kat9]

Long story short, I know I watched this video a few months back cuz I thought the light bulb thing was genius and I thought it described my problem but this isn't the video I thought it was but I'll ask you my question anyway cuz you're obviously knowledgable about these old 4runners. My '99 runs great when you start it up after it's been sitting, but if you stop to go into a store and restart it it runs rough and the check engine light will come on. But if you let it sit a couple hours it runs fine again. I saw a video that described this same problem and it was the injectors. Cuz that's not a small job, I've done plugs, wires, and MAF. I thought the MAF nailed it cuz it ran good even after shutting it off a couple times, but it's back to doing it but not as bad. I really don't want to do the injectors if I don't have to. Any ideas? Thanks. And I hope you're an engineer or something using that big brain of yours! Also, no fuel in my oil

[@4WheelKid]

Your gonna have to get creative and figure out a way to diagnose, use a stethoscope to listen to see if each injector is firing. Now days I would just use a thermal imager looking at the exhaust manifolds to see which cylinder is misfiring and go from there

[@zipkrackersr5823]

I'm having a misfire on 4 on my 97 I did oem fuel injectors new denso coilpacks new sparkplugs oem and gaskets still has misfire. But noticed white smoke and coolant shooting out of cylinder 4 so I assume head gasket blown.bought a k&n intake and cleaned my maf still miss fires really annoying so im Not gonna waste my time fixing it and resurfacing heads and hot tank cause I also have a oil pressure light on at idle then goes off when I hit the gas so I'm looking st used motor and ima swap it out and then rebuild this one and flip or keep for back up also mine won't over heat ran 30 minutes without getting hot even with misfire nothing electric looks wrong I'm stumped on it😢

[@4WheelKid]

Yeah thats not good, sounds like the head may have warped and blew the head gasket. Oil pressure light sounds even worse, probably time for a new engine, you could do a leak down test if you really want to, but sounds toast from what your describing

[@Z-Ack]

Jeez those compression numbers are low for that motor.. i got an 03 and all mine are 195 +\-5.. but i had issues with new injectors dripping after shutoff. Causes lazy starts or will die when starting after shutting it off recently.. never stuck.. but have had an evap issue for years.. smells like gas a little every now and again.. and cant fill it with gas like you should, clicks off all the time.. checked all lines and seems all good but gave up on it..

[@4WheelKid]

Its lower cause I live at high altitude. Compression isn’t an issue with my 4runner cause it doesn’t burn a drop of oil. Are they oem injectors from Toyota? Everything else seem to be junk. Maybe something wrong with the vent system, or anti siphon device

[@Miles-wy1zr]

Did you have to reset the ECU?

[@4WheelKid]

just to clear the check engine light

[@LujanLavenderFarm]

Bro awesome video god bless you man 🙏🏽👍🏽

[@4WheelKid]

Thank you good sir!

[@fndxrrxn]

i’ve got a 97 and it misses at 3k rpms and makes too much back pressure and keeps blowing the o2 sensor. i’ve done plug and wires and a fuel filter

[@4WheelKid]

what do you mean by blowing the O2 sensor?? do you have any obd2 codes??

[@fndxrrxn]

@@4WheelKid i fixed that now i’ve got a code that says “insufficient coolant temperature for closed loop fuel control”

[@cartoons981]

little motor oil in fuel works if injectors are sticking .they ain't always broken just some oiling up things inside

[@4WheelKid]

maybe but I don't trust those remaned ones, not a single problem after installing new oem

[@leonardtrump9155]

What kind of oil and how much thankyou

[@jameswatt4694]

Isn't a quality injector cleaner like Lucas going to do that and more? I;m generally no a fan of parts store snake oil but it seems like a more logical approach if you want to go that way....

[@cartoons981]

@@jameswatt4694 that easy hmm ?

[@cartoons981]

@@jameswatt4694 yes as long as locial approach don't have innocent parts as victims of cleaners that destroy gaskets . and creates more friction

[@rahnequipment1759]

Good job troubleshooting!!

[@4WheelKid]

thanks! could have done a better job from the start but this made me way better at diag. best to test not guess even if you have to invest some money in tools

[@joewhatsup]

Thanks a lot, great video and explanation

[@4WheelKid]

no problem! thank you. ended up putting in oem injectors. been running perfect for 8 months now

[@regularguy519]

What were the correct plugs you went with? Part number plz

[@4WheelKid]

NGK 3967 BKR5EKB-11 Multi-Ground Spark Plug, there are platinum ones as well, you just want them with the dual prongs

[@annmuir8764]

Omg! Could you please come to VA and fix my 98!? Misfiring with no CEL on and I can't find anyone that wants to put the time in to figure out. 😕

[@4WheelKid]

haha maybe if you lived in Colorado I could look at it for you. start with pulling the plugs one by one smell each one. if one smells like fuel and is clean you either have a stuck open injector or not getting spark.

[@annmuir8764]

@@4WheelKid thanks I will. Funny...I got this 4runner in Colorado...but not there anymore 😕

[@pjc4425]

If in Virginia Beach, I can take look.

[@lukeneave]

Could the knock sensors be the problem? Great video tho 🤙🏼

[@4WheelKid]

They wont cause it to misfire, it was stuck open injectors in my case. Thanks

[@jdmDC2ftw]

Why did you put a squirt or trans fluid in the cylinder?

[@4WheelKid]

helps lubricate it after fuel wash. fuel wash is super bad for cylinders and piston rings

[@JasonTaylor-xt9gc]

Do you still have your 3rd gen

[@4WheelKid]

Yeah I do, runs amazing ever since I put oem injectors from Toyota in, im never selling it. Only at 170k miles

[@JasonTaylor-xt9gc]

@@4WheelKid I bought one not to long ago and it's got misfires in 6 and 3 what could I do to fix my truck would a coil pack be the cause what else might cause it to be missing. I'm not sure what to look for it idles pretty high at cold temps and it seems to struggle in the acceleration department. I'm looking for any suggestions you have that might help

[@TheBobbilee5244]

Great video! My 01 read misfire on 6, 3 & 5, took it into my local Toyota dealer...and they charged me $500 to tell me it was misfiring on 6, gave no reasoning why or how and said I need a new engine. Then one of their techs called me and offered to cover the $500 bill if I gave him the car! Crazy Ridiculous...I of course told him to shove his theiving offer. And now I am about to start the diagnosis myself. Though I have 280,000 miles on the engine....so my question is, do you think it's worth figuring the misfire out at this mileage...or might be just time to get a new engine anyway?

[@4WheelKid]

Thats crazy, they cant just charge 500 bucks and tell you you need an engine without showing proof of what tests they did, if they did a compression test and that cylinder has bad compression then yeah new engine, if they did a combustion to coolant leak test and found exhaust gas in your coolant than yeah new engine. They cant just say you need a new engine without explaining why.

[@nelsonromero1645]

You have shop mechanical brot I have the same problem

[@4WheelKid]

I don't have my own shop unfortunately

[@tahahadada1936]

Ladies and gentle ,misfire in the 5vz isdue to prolonged heat . Replace what ever that should be replaced. Make sure the your 5vzfe is operating in optimum tempreture.

[@4WheelKid]

thanks

[@randyroth383]

I have a Tacoma 2000 4 cylinder 2,7 i was replacing 02sincers like once a year thay looked like black soot on them the tell pipe black soot also was thick I used lacquer thinner 1 gallon to 9 gallons of gas ran it out in 1 morning 2 hour drive an man the truck ran good 👍 lots of power felt nice did that 5 years a go new plugs after the cleaning no more o2 sincers the truck is in nice shape love my TRD 4 banger no more black soot in yes the CORN GAS 10%will make there stick open. Maybe you should of used lacquer thinner in stead of all that repair 🙋

[@4WheelKid]

Thanks for the info, glad your toyota is running good

[@genxiong2695]

Morale of the story buy OEM.

[@4WheelKid]

Exactly especially for a part like that

[@nordicpride9708]

Unlikely to bend a rod that way unless the cylinder was filled with fuel. Even then the bearing usually fails. In this engine not likely! I never use aftermarket crap on Toyota/Lexus. I tell customers OEM or take it someplace else ✌🏻

[@4WheelKid]

yeah i'm glad nothing happend, there was a tone of fuel going in, the engine never ran long with it like that, if someone kept driving like that it would be bad, yeah OEM is best, especially for extra important parts. 4runner been good ever since

[@relaxgaming8872]

Wow that’s a lot of work lol. Oem is the way to go.

[@4WheelKid]

Yeah no doubt no issues after oem just expensive

[@jefftaylor947]

Wait a second - are you the TW200 GUY?

[@4WheelKid]

Yeah

[@cardboardbox111]

Thanks for the video! Just picked up one of these. Hope this is the only issue lol.

[@4WheelKid]

hey no problem! hopefully you won't get a new bad one like me. all the other reman injectors have been good so far, I probably just got unlucky with a rare faulty one

[@cardboardbox111]

@@4WheelKid Thanks. It's reassuring to hear that!

[@hankhill3417]

Best V6 ever made by Toyota

[@4WheelKid]

So true

[@um8440]

I hope you learn your lesson, when you buy cheap you buy twice.

[@4WheelKid]

sure did! this is so true

[@simonh2734]

Damn great vid

[@4WheelKid]

thanks!

[@integridad7]

Did you find the initial problem?????

[@4WheelKid]

It seems to have been an injector since the cylinder that was misfiring was getting spark. Should have been more thorough in my diagnosis. Been learning a lot though. Ended up going with oem injectors from Toyota since these reman ones kept jamming open. Haven’t had a problem since

[@nbprotocol5406]

You need the Denso ones not some other brand.

[@4WheelKid]

denso doesn't make them for this vehicle aftermarket, I had to get them new from the dealer

[@MichaelSchmitz-z7q]

I never had luck with rock auto....

[@4WheelKid]

Depends on what you get they have quality name brand stuff and also cheap garbage

[@adamjackson867]

Not saying names but yes I also had bad luck with that company but also yes bro grate video

[@4WheelKid]

yeah had another one of those injectors stick open on a trip a few months later. paid the money and replaced with oem injectors and replaced pump with a denso just in case . no problems 8 months later. I work in the automotive field and never heard or experienced injectors jamming open like that even if a fuel pump goes bad. In my opinion, I don't trust reman injectors. would like to know what causes them to stick open like that

[@pete5137]

Genuine Toyota parts in my '01 4runner only .

[@4WheelKid]

good idea

[@yamahasakisteveniv8349]

❤❤❤❤❤❤❤❤❤❤ thanks

[@4WheelKid]

no problem!

[@jeffplayswithcars]

Reman parts are almost always a bad idea. Buy Toyota, Denso, Aisin, Bosch, etc.

[@4WheelKid]

Yup exactly

[@geomatiq]

dude nice video..

[@4WheelKid]

Hey, thanks

[@hankhill3417]

Only buy OEM parts for these. I have had 5 of them.

[@4WheelKid]

I agree, or at least name brand aftermarket parts like aisan or denso if available because they make a lot of oem parts for toyota. Put all brand new oem injectors in from the dealer, I know how to get a dealer discount. Dropped the fuel tank, cleaned and installed a new denso fuel pump and sock, replaced the filter as preventative. No issues since then. Had to change my oil like 3 times from the fuel wash. Still runs great, still doesnt burn a drop of oil between oil changes

[@Auxbeam]

Hi Do you need some great lighting upgrade for free for your car to help you better driving, off-road and adventure.We're the pro auto lighting manufacturer for nearly 20 yrs and w're looking for sponsorship!

[@4WheelKid]

thanks! maybe someday

[@pauloramirez8216]

You don't blame rock auto? They sold you wrong parts, cheap off brands and cheap remanufactured parts.

[@4WheelKid]

I guess I could blame them too, people need to realize there are good parts on rock auto and complete garbage parts also, you get what you pay for

[@americanrealitytoday]

You started all wrong, for critical components you should use only OEM parts, like cleaning and testing the car own original injectors.

[@4WheelKid]

Yeah live and learn

[@meyawabdulaziz3863]

thank god that could have ended badly blesses

[@4WheelKid]

true that! the 4 runner lives on, changed the oil like 3 times to get all the fuel out

[@meyawabdulaziz3863]

@@4WheelKid a testament to how good these blocks are...my oldest brother switched to modern era engines and believe me he does not like it he is losing money faster then hen can gather...my advice to you is to keep it alive , rebuild it if comes down to it, because it can decide between losing a job or keeping it , having some money in pocket or nothing down the road , food or no food on the table , life or death why ? because your car still runs and that new POS 2022 toyota tundra isnt working because of some fuckery with the new complex engineering you cant fix and you realy need it to run now

[@4WheelKid]

for sure! I love older cars. these 3rd gen 4runners keep increasing in value especially here in Colorado. so nice not having any car payments. plus when you have to fix things on them you increase your skill level and that is valuable.

[@meyawabdulaziz3863]

@@4WheelKid i just checked holy mama ,,they did increase dad still has the 2000 prado 5vz-fe which i over maintain myself , its just to reliable to let go

[@rovereddy2431]

Hella yea

[@4WheelKid]

😁

[@zack.smiith]

Smart kid

[@4WheelKid]

Thanks, I learned a lot from this

[@allmivoyses]

Dude, always check the simple things first .

[@4WheelKid]

For sure

[@chev39rsh]

never buy the cheapest injectors.

[@4WheelKid]

Definitely

[@jammystarfish]

Maybe stop ordering crap parts from Rockauto my dude

[@4WheelKid]

Yeah, they sell crap and good parts, you just gotta know what your getting

[@GQ-jr5ro]

And then I took the rear passenger tire off just in case there was a loose wire in there

[@4WheelKid]

cool

[@guymansonjr4780]

OEM, OEM, OEM, OEM

[@4WheelKid]

I agree

[@madhadder6754]

Buy toyota parts and life is better cheaper in time which means more money for you

[@4WheelKid]

No doubt

[@dangda-ww7de]

Why would you check the timing mark? It was working before, the problem was with fuel not timing mark. Lesson here is dont buy cheap chinese parts.

[@4WheelKid]

Because its a timing belt and the belt and components wear over time and can cause it to skip a tooth

[@4WheelKid]

Also those injectors were remanufactured in America but poorly done. Or using Chinese knock off injectors as cores