How to Check Fuel Injector Resistance with a Multimeter
Автокөліктер мен көлік құралдары
Using a Multimeter to Test Fuel Injector Resistance Ohms. Learn how to check fuel injectors to make sure they are working. You use a multimeter on the resistance settings and measure the ohms of the injector. All injectors should be within .5 ohms of each other. If an injector is out of the resistance specification, that injector is bad.
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 Screwdriver to test fuel injectors (EASY): • Testing Fuel Injectors...
How to test Fuel Pressure : • Fuel Pressure Test
How to Test Spark Plug Wires: • How to Test Spark Plug...
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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.
Пікірлер: 609
Dang 10 years later and this video just saved me $300 from a tow and diagnosis. Chrisfix will always be a legend!!
Thanks! I was getting read to remove my injector rails and swap injectors to troubleshoot if injector 4 is bad due to misfiring. This will save me that time and I can quickly check resistance.
You are a great teacher - it's so fast like being taught in the matrix with a software install
You are truly a master Chrisfix, you've made me quite proficient in automechanics over the past 5 years.. truly thankful for your tutoring, you are the best.
I love the simple straight to the point short answer for what i was looking for!!! Thank you Chris.
One other important point. You ALWAYS want to subtract the meter lead resistance from your reading.. So, touch the test leads together (in this case, at 200 ohms) you will probably get something around 0.3. If you have 14.8 Ohms for example after stabilizing, subtract the 0.3, giving you an actual reading of 14.5 Ohms. :) This is especially important with more sensitive devices, and can mean the difference between actual replacement, and not replacing when its actually bad. Good video!
@isaiahpinkerton3445
2 жыл бұрын
Good point, but i think the manufacturers account for that user error and people who need to measure more sensitive devices know this, already.
@jemtec1
9 ай бұрын
@@isaiahpinkerton3445 most of the more recent and higher quality meters do auto calibrate. Biggest thing is just do the 200 ohm setting and touch leads to verify it’s truly “0”. :-)
@limeallens6160
8 ай бұрын
testing leads read 5.1 testing the injector read 16.5 so 11.4 is the result. Is this the correct reading?
@amy40c
6 ай бұрын
Hey, my injectors are showing 0.8 ohms, is that normal? Low resistance injectors?
Now i have found my favourite youtube diy channel. Keep it up chris!
Chris you saved me a bunch of money! I used my multimeter to test the injectors on my Chrysler 200C 3.6L. Each tested at 15.0 ohms, except my one trouble cylinder. That one tested at 33.0. Replaced that injector, all my engine warning lights turned off and it's running smooth. Your video very straight forward and the graphics made it easy to understand the discussion. Thanks!!!
@giovanimiron
3 ай бұрын
Hey man. When u tested your Chrysler 200. You tested it while the fuel rails and injector was still on the vehicle correct? Just have the car off and test it right? I got a Chrysler 300
Amazingly simple stuff and brilliant guide. Thank you!
@chrisfix
8 жыл бұрын
+Pawel Tulik No problem! Glad you liked the video!
Like the way this guy explains things so simple. Cool tutorial bro.
You are a legend with your well rehearsed "How To"s. thanks man !
You do this so well Chris ,simple and to the point ,cuts through much of the mystery of all these feed back systems cars now have?
@waen606
6 жыл бұрын
Thanks for the help!
You are a big help to me Chris. You add alot to my automotive aptitude.
Just want to say thanks for the video. Showed me what I needed to no to test my injectors on my Jeep
You forgot to mention that injectors are either high impedance or low impedance. A low impedance injector will have a resistance of around 2.5 to 3 ohms, while a high impedance injector will fall somewhere around 12-18 ohms. Good simple video on how to check 😎
@trailingrails9953
Ай бұрын
Well that would fall under the whole looking up the impedance for your specific injectors thing that he mentioned.
I love the fact that your vids are simple straght to the point
@darwinescobar7629
3 жыл бұрын
That is ChrisFix for you. He is THE BEST
Thank you for explaining everything in simple terms
Thanks man, good job! Fast and quick to the point.
This is a really helpful video of yours which serves it's purpose even now. Thanx Chrisfix.
This helped me out today. Never did fuel injectors thank you
Nice job Chris you always do such a great job on your videos.
I love short and to the point videos! (plus it's totally logical advice) 👍👍👍
Great video Chris clearly showing how to test. Thanks :)
Thanks for sharing this i can't wait till tomorrow so I can test my 4.0 I6 jeep. Seems so easy. Cheers from Jacksonville Florida
Enjoyed this video- have same multimeter as Chris, it worked exactly as he demonstrated- thanks...
I just want to thank you for your video, helped me to diagnose a bad injector.
@chrisfix
9 жыл бұрын
***** Awesome! I am glad my video helped! Good work! New automotive "how to" videos every Thursday and most Mondays so stay tuned!
The was a very useful video. I was able to test and replace my bad fuel injector!
After checking a lot of the other things that can cause lower loss, I found an injector with a different resistance than the rest. I hope it's the only problem. Thanks, A LOT
Christ this got to be an old video because we cannot see the numbers on the meter... YOU KNOW YOU MAKE THE BEST KZread AUTOMOTIVE HOW TO VIDEOS IN VIDEOS STEP BY STEP IN THE THE WORLD BRO !😊
Appreciate you sharing this. Helped me alot. Very quick and easy explanation.
Love it that I googled a problem and fixid sent me to my favorite KZreadr !
ChrisFix, thanks for your amazing tips..was extremely helpful!
another great video from Chris , saves money. I guess this test can be done without removing any part from enginer except the injector connector. thumbs up.
@chrisfix
8 жыл бұрын
+hypertuch Thanks a lot bud! You dont have to remove the fuel rail and intake. I just happened to have it taken out of my car so I used it.
Really good the way you explain ,step by step.
You made two videos in one day? As much as I would love two videos, the quality is is worth the wait.
Tested my injectors based off this video. 3 tested 17.5 and the last one was 17. Thanks so much for making and explaining this how to easy. Keep up the great work.
@chrisfix
10 жыл бұрын
Great! Glad the video taught you something new! Looks like your injectors are good to go! It is a pretty easy test and kinda neat to see! If you havent already, give the video a thumbs up (it helps me out)!!!
As usual it's nice video, Chris.I like much your way of educating like us beginners.Keep Spirit Up
I can't stop tutorial videos like yours very informative and interesting
Hey Chris! You've saved me over a thousand dollars! Thanks buddy.
@sbfguy7793
4 жыл бұрын
Good for you. That's awesome!
Thanks for taking the time, good straight video
Great video Chris, not surprised you got 5.6M subs, wow!
Best toturials!! Thank you ❤
Thank you👍...always know that he has an answer😊good man!👍
Never disappoint, sir! Tx for the video!
Even way back when you were and are great! Thanks Chris for the priceless info!
@chrisfix
4 жыл бұрын
Thanks and glad the video was helpful!
Awesome video. I need to test my injectors! I'd like to see how close each injector is to each other. Thanks and great video as usual!
@chrisfix
10 жыл бұрын
Thanks! Yea, I was curious of how how close my injectors resistance was to each other too!
Straight to the point good video.
Love your vids. Short and sweet.
you are among the best. im not surprised if soon you will hit 10m subs.
It is great to have someone out there with such God given talents. Well done! dude :0) and thank you so very much.
@chrisfix
8 жыл бұрын
+Happy Murray Thanks! Glad the videos are helpful!
Verrrryyyyy good videos ChrisFix thank you so much for helping out
best video, simple and easy. you are the best
Thanks Chris , great video ❤
Thanks for fixing it Bro so we can see the numbers!
You have done a good job man big up❤
Great video man. Your videos have really helped me a lot.
@chrisfix
7 жыл бұрын
Great! Glad the videos have been helpful!
good one, chris...
Thanks for the lesson!! Good info!
+Hector Garcia-Martinez For some reason I cannot reply to your comment so I hope you see this. You need to test your fuel pressure and let me know what happens when the car is warm. Do these tests: Fuel Pressure Test
@jaicabryizky6987
4 жыл бұрын
Hey ChrisFix what is the brand/model of that multimeter? I'm pretty new to doing repairs on my car, and that tool looks all kinds of useful ✌
@amadeoheron5948
4 жыл бұрын
@@@jaicabryizky6987 its a cen-tech from harborfreight they also have different models inexpensive and such a great tool hope this helps you
Awesome video Chris always helpful!!!!
@chrisfix
10 жыл бұрын
Thanks! Glad the video was helpful!
Another great video thanks Chris
well done explanation, cheers.
Love your channel
Thanks for the video. Helpful for me, working on a 2001 4.6 ford. Getting P305 misfire on cyl 5 & 7. Eight new plugs and new coil packs on 5&7, runs much better but still getting a misfire occasionally. Suspect some type of fuel delivery problem.
@chrisfix
9 жыл бұрын
Kevin N Could be injectors. I would change out your fuel filter if you havent already.
Not sure if this is even my problem yet, but I just want to thank you for something very basic yet for some odd reason many fix it videos for various problems that involve checking with a multimeter never tell you what to change the damn switch on the meter to only what it should or should not read so thanks a lot definitely got a subscriber even if this isnt my problem. lol
Прекрасно видео. Поднесено е изключително професионално, лаконично и много, много точно. Благодаря! Успехи и нови очаквания!
@csn6234
7 жыл бұрын
Иванов Н. Oh, totally bro. I hear ya -- we all hear what you're saying.
Thanks bro. Great video.
Great vid Chris.👍
Also watch out for slow climbing reading if reading takes long to reach stable it is also likely a bad injector another check to do just to figure out what's actually failing is measure from each terminal to injector bodies sometimes it can be the internal wires have shorted to body if no reading across any terminal than there is likely a break in the wire hope this helps.
Thanks for this tip it really helps
Please test and do a how-to on Power Probes. They seem to be head and shoulders above a test light and/or multimeter. Great channel, my windshield is awesome now thanks to you! And I'm just beginning to put your videos into practice.
thanks man, much obliged!
You know all the good stuff...thanks for sharing!
@chrisfix
10 жыл бұрын
Haha, thanks man!
@rosewell1983
10 жыл бұрын
ChrisFix Dude, where is your car?
Great video once again. Thanks!
@chrisfix
8 жыл бұрын
+bryan1282 Thanks a lot!
Chris, thanks for this awesome video! I particularly like how you explain what you are doing and why. Can I also listen to each injecter clicking by using an auto stethoscope (it has a probe at its end)?
THANKS---VERY HELPFUL...GOOD VIDEO
@chrisfix
8 жыл бұрын
+J SMOAK No problem!
thank you. I will check this out in my Toyota.
Great teaching
thank you God bless you!
Fantastic information!
Thank you Sir, very helpful.
Keep up the good work
Great video.
there's a valid reason why you have over 8 millions subs Chris. You're one of the best at what you do!
thanks Chris!
thanks man, great info
thanks for the video it was helpful
@chrisfix
8 жыл бұрын
Glad the video was helpful!
Thank you mate👍🏻👍🏻👍🏻
Thank you sir very helpful your video
thanks great video and explanation..
thank you very much, l learned something.
Great video pal...👍
Definitely helpful 🤘🏾🤘🏾 hopefully this stops my misfiring after replacing the spark plugs
Good stuff
Thanks so much. I'm going to do it today
@chrisfix
Жыл бұрын
Let me know how this goes!
you are so good ..
Thank you! : )
+ChrisFix Clogged/dirty/etc injectors wouldn't throw incorrect resistance readings though, right? So this is literally only for testing if the actual electronic part is bad for the injector, right?
@OtherDalfite
6 жыл бұрын
Corrrect. Dirty or clogged injectors would read perfectly fine. The "solenoid" chris describes is simply a copper winding that becomes magnetized (just as passing current through a wire wrapped around a nail makes it magnetic). An injector with an intact solenoid should read to have a very low resistance.
@grantquinones
5 жыл бұрын
@@OtherDalfite cam you do the same thing for the coil packs for spark?
@OtherDalfite
5 жыл бұрын
@@grantquinones unsure. The coil pack has switches inside so i doubt you could get a signal since the switch will be open. A good way to tell if a coil pack needs changed is if it is cracked or just looks really old. Spark plugs can be checked for continunity as well but they rarely fail unless really old
@grantquinones
5 жыл бұрын
I tried can shaft position sensor and got it to run just a little rough still
Smashing video chris :-)) For your own interest, touch the probes together and note the stray resistance shown on the meter, then when testing your injectors mentally subtract the stray from your display. Its a habit from being into electronics, not all meters have a "zero" button :-)
@chrisfix
10 жыл бұрын
Awesome tip! Thanks bud!
Helpfull information 😊