Testing Fuel Injectors Fast

How to test fuel injectors for pulsing. Learn how to check fuel injectors. I use a screwdriver to test fuel injectors to make sure they are firing. You place a long screwdriver to the base of each injector and put your ear to the end of the screwdriver (like a doctors stethoscope). You should hear constant clicking. If not, then your injector isn't firing or is firing intermittently.
Symptoms of bad injectors are a check engine light with codes P0300 through P0308, misfiring, hesitation, poor fuel economy, stalling, and a poor idle.
Using a Multimeter to Check Fuel Injector Resistance: • How to Check Fuel Inje...
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Disclaimer:
Due to factors beyond the control of ChrisFix, I cannot guarantee against improper use or unauthorized modifications of this information. ChrisFix assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Use this information at your own risk. ChrisFix recommends safe practices when working on vehicles and or with tools seen or implied in this video. Due to factors beyond the control of ChrisFix, no information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. Any injury, damage, or loss that may result from improper use of these tools, equipment, or from the information contained in this video is the sole responsibility of the user and not ChrisFix.

[@mattdoughty5695]

I enjoy how you figured out that you could place the camera against the screwdriver so the audience could actually hear the clicking. Simple detail with a large effect. Well done.

[@zedex1226]

Literally all I'm here for. I'm troubleshooting a cranks, coils good and spark, no start motor and have never done the listen test. Wires and injectors are very hard to access for removal. MIIIIGHT be a wiring issue elsewhere. What to do? I stuff the stethoscope in there and listened -but- guess what? I've never done this before and don't know what it's supposed to sound like. Now I do! Saved me a lot of digging.

[@dnlmachine4287]

Great videos. I am a mechanic and machinist and its really good to see youngbloods doing it right and doing it for themselves. Also the diagnosis progression you show is really nice too. This is not something you will ever get from a dealer.

[@chrisfix]

***** Thanks a lot man! I appreciate it! I try hard to get the best info out there without rambling on! Fixing cars is a lot of fun!

[@saragarcia-ib2ck]

Hello dnl machine, My daughter and I are trying to change fuel injectors on her 2003 Honda element.... can you help us,please?

[@florida199]

The only thing that one is going to get from a dealer is a car with a bad injector .

[@valireklaam]

Tested the injectors on a silider that's not working, it seemed to click louder and with less frequency than the others, but consistently. The cilinder on that one misfires for sure, may be thats the reason the injectors clicks sound louder but injectors click consistently ..

[@Drithfang]

@vr irregular firing compared to the others is still bad, the coil inside might have high resistance or be damaged to the point that the electrical pulses and thusly the mag field aren't being applied as they should to the injector.

[@mishagdon]

OUTSTANDING VIDEO. I already knew how injectors function, yet I have to give you a lot of praise for going the extra mile and showing people the cross section of an injector with the solenoid.

[@whomadethatbeat]

I’ll be honest, I was skeptical but tried it out. One of them wasn’t clicking. Swapped it out and BOOM!! 92 Cadillac Coupe is smooth again. Thanks bro!!!

[@mofrogamericanjedi5627]

Love your simple and direct how to's man. Ive been wrenching for years and youre by far the best instructional ive found! Keep up the gopd work and thanks again

[@rayman8991]

This was a life saver. I knew it was my fuel injectors but didn’t know how to test it, and which one. This helped out a lot. Thank you

[@ThomasDSullivan]

Hey Chris Fix.. Job well done, NO LIE'S, No BS, Keep up the GREAT WORK.

[@adamellis4578]

Loved the video wasnt dragged out no bs short sweet and to the point.

[@snyczi2919]

That's one of the best things I like about his videos, no bs and straight to the point. Plus everything is on realistic prices.

[@darwinescobar7629]

That's ChrisFix for you. He is THE BEST

[@josiahfalde6247]

AMEN brother

[@brianlau6373]

Ff

[@flatsixx]

Yep- I subbed for that reason.

[@MrJonathanCervera]

Chris, you're videos are extremely helpful, all of them. Thank you for doing what you do. Cheers brotha.

[@iafmehdi6356]

My neighbour saw me doing that , he never asked me something since then

[@azwalazman8415]

Iaf Mehdi by not understanding what ure doing your neighbour might think ure takling to ur car engine :p

[@christopherwatkins262]

your neighbor is nuts

[@problemchild2605]

🤣🤣🤣

[@BahnGop]

Someone who asks questions is an idiot for 5 minutes, someone who doesn’t ask questions, is an idiot for life.

[@DR-mp4gv]

@@azwalazman8415 ...ignorant neighbour "the guy next door thinks he's the car whisperer.. he's nuts!!"

[@EthosRose]

Hearing it made my day, no BS thank you for actually doing good work and teaching in a simple yet exceptional way!!! Skal

[@arielmontoya6774]

Thank you for the clear and simple way of explaining without leaving out any details . I enjoy all your videos and often learn as I am new to this 😎 muchas gracias señor Chris .

[@lilredog]

This is awesome. I told my husband that I heard this sound prior to him listening, he didn't believe me. You proved me right!!! boooyaaa! Thanks man!

[@daisyb5646]

You sound like a very pragmatic woman. I wish you were with me now to help check my fuel injectors. Well done, and I like it 👍

[@dmac2899]

@@daisyb5646 she’s married dude

[@bryan1956]

@@dmac2899 what is his problem 😂😂

[@danielq.4371]

@@dmac2899 names Daisy, looks like another woman who needs help lol

[@duanepless8811]

This was very helpful for my 2010 Cobalt ss. Thank you so much. God Bless

[@mattlehnardt8035]

you are a natural teacher, caue you're clear and think it through, and explain it that way, from a laymans perspective, rather than assume people already know all about it and you drown them in technical terminology.

[@mollyb2087]

I have to say, I really appreciate your videos. You break things down in a very easy to follow manner!

[@chrisfix]

+Molly Hebert Thanks Molly! I am glad the videos are easy to follow and helpful!

[@grzegorz16100]

That is just brilliant. I did leak off test on my diesel injectors and it looked good. Tried this method (had to figure it out myself...) and one wasn't clicking!!

[@Pacificpapi]

You literally just put my anxiety to a halt.

[@chrisfix]

Glad I could help!

[@happyrainbows2135]

The best video on here! Quick and to the point with an excellent general explanation of everything going on!

[@Naruu13]

Changed my ignition coil since I was getting P0303 and done. No more car hesitation nor error found, thanks!

[@OliverGatch]

ive used this method too, listening to engine sounds especially on the timing chain part and bearings about to get worn out! its helps a lot of money and time before removing anything or buying some parts that might be the issue but turns out its not.Great video Chris!

[@vinkalkukwas2555]

Hey Chris I've been watching your video since a while. They are very informative and helpful. One request, can you please upload more videos on engines?

[@sallymctigue4079]

You are my favorite mech tech on You Tube! I have been doing A LOT of my own maintenance on my vehicles. Thank you!

[@razaalyas9214]

man, i really appreciate your vids. Just got first car (ford ranger 2004) and you really help me do basic maintenance. keep it up!

[@danankblast]

this is what iam looking for.. thanks for sharing,, keep going man! ✌️

[@dozumbabfree9786]

thnk u just checked them pretty amazing.....

[@chrisfix]

dozumbabfree Awesome! Glad you learned something new!

[@A.Musa76]

Straight to the point and you even explain how the injector works. I give you prop.

[@LOUNIS911]

Thank you to share this with us. I'm french (and I'm not perfect) and that's perfect to determinate if my LPG's injectors are right or not to work

[@RollingThunder20]

ChrisFix: “...using a screwdriver.” Me: Heck yeah a tool I have already!

[@RollingThunder20]

@@AJNoon accurate lol

[@markjones8632]

I've done this and the problem I typically see is the sound from other injectors travel down the rail and you can't tell if the injector is bad or not. I think a better way in addition to an Ohms test is switch the injector from one port to another than run a code test for that cylinder and see if you get a misfire for that cylinder.

[@Vacantlotofnothingness]

Make a video and show us That would be cool man

[@humanbean5554]

P[😊😊

[@101Volts]

Thanks for the education about how fuel injectors work, it's cool to know.

[@danb.3397]

Good job. To the point and no wasted time. Good execution.

[@professorpizza69]

Crisfix, what would a clogged injector sound like?

[@inbredjesus9188]

Patrick Austin probably won't hear it

[@jakecarlton1135]

Yea that’s my question that’s what I want to test for my mustangs been missifiring Kathy after letting it it run on empty tank I think the crap got in a few injectors. How would we test for that because hey we all know everyone’s will works it’s just telling a diff from a clog to a bad one is the question

[@tunez7220]

Reminds me of a cheaper version of that stethescope rod tool. Pretty cool stuff.

[@tanyagolphin2308]

0

[@tim7076]

Love it man. This beats the hell of removing all injectors to find blockages

[@carlel4219]

Chris, you are a Godsend. Thank you for helping the youtube community. Happy holidays. Stay safe,

[@swift__]

Awesome 🤘🏻

[@geojor]

thank you...

[@flashsam3469]

I like this guy so clear and informative Keep it up bro!

[@mikea9365]

Was looking for fuel injector videos for my 89 ranger with the 2.9 all over KZbin... Should have known better and just went straight to your page. Thanks for all the content Chris!

[@Tom-yc8jv]

Just bringing the comments up to 1,000 with this comment

[@RealDarkFilm]

1:27 so thats what the back of his head looks like

[@michaelbarry7630]

RealDarkFilm

[@rezagrans1296]

@RealDarkFilm 1:29 acshooely lol CHris is like thinking: "damnit i gotta expose myself thiS much..

[@rezagrans1296]

@RealDark contd .. ...time to quickly duck outta the way! :3 lol

[@inbredjesus9188]

he should have worn an Austin powers mask

[@smug3495]

🤣🤣🤣

[@edwardashley6688]

That “mechanic’s stethoscope” can diagnose all kinds of engine problems. I have them in several different lengths. Very valuable tools!!

[@minamiranda9835]

Very helpful! Thanks a bunch ChrisFix!

[@blackbeltking85]

Can you show how to replace fuel injectors?

[@EliteNK]

Just pop me out and replace them with new ones; at least in this example,, diesel is differentffrom direct injection

[@KnightsCrossbows]

you should check out scotty Kilmer channel he works on cars too

[@ajbayu68]

Geoff k ChrisFix way better

[@MrMe-qu4gw]

Scotty Kilmer is more focused on making quick vids

[@dondesnoo1771]

he thinks fuel economy 10mpg. in his georgeos mk3 Lincoln is great.

[@ChoboUnjeon]

I guess that they're rivals

[@alvinbalonglong206]

sk introductory is unnecessary & most are summarized.

[@jenniferbrown6127]

This was an awesome video! That was my problem and this video helped me figure it out. Thank you!

[@tylarsen2356]

Wow, thanks for the great info. worked like a charm for me. Keep up the good work Chris.

[@BigBoyz33]

I wish i can do this with my 350z but the Fuel Injectors are under the Plenum lmao.

[@RzVids]

Pretty sure you can still reach them. I’m able to see and touch my fuel injectors under the plenum in my G37

[@reckitralph1802]

You need U shape screwdriver 😂

[@____________6324]

You forgot to say that a bad injector can cause the car accelerate like gay

[@hermanburnette4113]

____________ 0 'm

[@demarques1911]

😅😅😅

[@mrcoffee315]

I would prefer a gay car running well than a straight one that thinks like you.

[@ATorres0821]

Your description of this method and when to use it was clear and concise!

[@philippelahaie7247]

I concur

[@inconspicuouscharacter7755]

Thank you!! Was going to call my mechanic tonight but I’ll give this a try first!

[@Redantz864]

Why not just unplug them one by one, if it bogs then it's working if not then it's bad

[@chrisfix]

You could do that too but the clips on fuel injectors can be brittle and you can easily break them!

[@gstactical2029]

Also some injectors are a bitch to get out on certain cars

[@101Volts]

#Gman Upper Intake Manifold Removal is required when servicing on the 2000 Caravan w/ 3.0 Engine. It's not horrible, it takes time though.

[@savagenw477]

Well, it's definitely a good method if you've rewired your injectors and you'd like to see if it's getting an electrical signal still

[@alyssamahabir6336]

savagenw

[@EnzoProductionz]

This helped out a lot thanks man! I was in a bind with 2 options wrong with my car, bad cylinder or bad fuel injector. Did this test and found it's the injector! I'll be sure to buy new ones ASAP.

[@chrisfix]

+EnzoProductionz Awesome! Glad the video was helpful and you figured out it was the injector!

[@renzo4296]

Thank you very much for this informative video, straight to the point.

[@voidisyinyangvoidisyinyang885]

fascinating vid on how fuel injectors work! thanks

[@joedesantis8235]

Super helpful Chris! Thanks so much!

[@richardweyland116]

Nice job! Thanks for taking the mystery out of how this system works!

[@RADHARANIist]

Thank you Chris your videos are very helpful!!

[@alberteller7286]

That was great you are the only Tex’s ever said that thanks so much you the man 🙏🏻

[@philztheone]

Beautiful! Love a low tech diagnostic test. Excellent video!

[@chrisfix]

+philztheone Thanks!

[@renzo4296]

Thank you very much for this helpful information, I'm gonna check my injectors like this to.

[@rhipul]

great video. i learned a bunch. i like the way you presented everything. excellent job. keep it up.

[@Butterflytaxidfw]

Wow, thank you so much for this Chris

[@stivoboss7723]

it was great .keep on we need more from you.thanks

[@johnkirkland621]

Hey thanks man! Excellent video! I had hesitation AND a hard start (two cranks) in my 1999 Jeep Cherokee. The hard start was due to a failing fuel pump (bad check valve and fuel pressure regulator). The hesitation and bad idle were from a failed injector. 'Preciate it man.

[@chrisfix]

Awesome! Glad the video helped and nice job diagnosing the problem!

[@jamman7344]

Man, by the time I finish watching all your videos I should be a certified mechanic for myself

[@robertthibodeaux4435]

Always explained to detail and make it easy for us! No wonder CF has 5.88 million subscribers!! Me included!!

[@AodhMacRaynall-dr1sf]

some of the best videos on KZbin.

[@Apacheoilcompany]

Brilliant video, Chris. Thanks for uploading!

[@chrisfix]

Apache Oil A Houston TX Fuel and Lubricant Company Thanks!

[@stevendean007]

thanks for this test

[@chopperboy4204]

Bro this just helped me diagnose my bad fuel injector. Thank you brotha. Really appreciate it.

[@chrisfix]

I'm glad the video was able to help you diagnose your fuel injector!

[@PakReviewMachine]

Chris i just love your videos

[@chrischery2733]

CHRISFIX IS A KING OF MECHANIC

[@Fkidd702]

Hell yeah , Chris fix for the win again

[@jamessickmore236]

Thanks Chris my car had a loose connector to the injector works great now :)

[@ibenzawla]

Somebody give this guy an award. Please.

[@Geripappa]

Super awesome advice! Quality video! Thanks! Thumbs up!

[@zx8401ztv]

Smashing video and discription of the operation chris :-)) A solinoid with return spring, that sunk into my foggy brain straight away, straight to the point as allways :-))

[@chrisfix]

Thanks! Glad it was easy to understand. Sometimes it is tough to explain stuff so that anyone can easily understand!

[@RTD1947]

Great video as always...thanks!!!

[@areejmahajnih2041]

best explination ever!! Loved it 💜

[@chrisfix]

I'm glad you liked the explanation!

[@GrindbIast]

Thats an awesome tip! Thanks for the good info

[@000001willy]

Great Video. Simple straight forward test.

[@Datboyhoolio]

Your videos are always amazinggg

[@TitanFallDeath666420]

I been working on cars all wrong! Holy chit great vid bro!

[@erinfoyle59]

Really good info thanks..

[@lordkin-kong8888]

Dude, your channel is priceless ✌️

[@georgeclemenceau7317]

Brilliant and informative, thanks...

[@bobtpapa]

You are amazing... No $5,000 test unit is needed!

[@renee5475]

extremely helpful.... so glad I found this video!!I need all the help I can get lol I noticed I had a vacuum leak a few days ago on my firebird .. time to start the process of elimination ... I'll be watching for more helpful tip a 😉

[@laurafarmer2765]

Dude I have been wondering on how I could find out which injector was bad. You are awesome!!!! Thank You :)

[@alabamaman1]

Great video. Thanks ChrisFix

[@m.redzuan4492]

You are very genius. Thanks.

[@Lrenteria]

Good shit brutha!! Very helpful.

[@cameronmccullough4486]

Straight forward, not bad, as a matter of fact awesome.

[@jamesgermo4516]

You are friggin awesome man. Thanks for this video

[@unitedfightapparel7033]

This 💯 works. Great tip. Thanks.

[@Ethereal.Canvas]

You literally just saved me from just going and buying a new car. All over p0301 and injector 1 not ticking. Thank you from me and my bank account!

[@786_M.kafridi]

Thank you Sir. Very helpful.

[@r.d.ontheroad-1094]

Nice job, It helps ! Thanks, keep it up!

[@chrisfix]

Thanks a lot Rick!