Using a Multimeter to Test Fuel Injector Using Resistance (Ohms) 

Ok - good / simple test and advice. That being said , if I were to perform this test on all injectors as a comparison on ohm readings between the injectors - I would not remove the injectors - rather just unplug them and test without removing

'98 Ford Ranger 3.0 range is 12.0 - 16.0 ohms. Four were about 14.2 ohms. Two were as high as 28 ohms. Truck has over 422,000 miles. I replaced all of them. I have all the paperwork from the previous owner and they were never replaced. And it cleared the P0304 code.

I planned to clean injector as i have been suggested to do that, and after i clean them i will measure the resistance. Thanks for the tip.

I really like the quality of your audio. Of course the voice is great. But from a technical perspective, what are you using for audio?

Info: Alt 234 will give you the Ω symbol if you use the Numlock Keys to choose the numbers with Numlock On.

Hi, how do you record your audio and video? coz your audio is so clear i'm using ear phones and your like speaking inside my head. Thanks.

Love that Trans Am in the back!!!!

I once again you don't have to respond I read some of the Articles here and found what I was looking for thanks I really appreciate it.

Quick one Can cleaning the injectors alter the readings in anyway? Can ohm test it be good, but still the injector bad?

Testing resistance sometimes will lead you to wrong diagnosis..it is better to swap with another..because sometimes injector will malfunction when it gets hot or running..i have experienced it many time..resistance is in specification but after a few minutes of driving, problem will comes..i checked the data stream while engine is running , i saw that the injector #4 is 0 ms..then when engine is cold the injector have 160 ms.

"331SVTCobra saidFirst reading was 16.1 ohms. The second reading was 15.9. The difference isn't worth worrying about, but notice that you steadied both probes with your fingers, creating a parallel path, and reducing the resistance." ...that's not true. The parallel path goes across your skin, which is a high resistance, some mega ohms. You can't lower the 16ohms with such a high resistance. Meaning: measuring such low resistances, you can't influence the reading by holding probes with fingers. You can check that by the simple parallel res. equation. The story is different when you measure high resistances, but still, the path through skin is very high res. So you need to measure megaohms to screw the reading by touching the probes.

can you test the fuel injectors while they're still in the same way

4 minutes of talking for a 4 second description. Just say what you need to say and be done.

Can I do this while they’re in the engine still, and can I check the wires going to the fuel injectors?

I'm not getting any readings on my meter is possible all injectors that bad?

hi, all my 4 injectorshave 0 ohms of resistance, but the engine start and no engine light? I did it multiple times, precociously touch only the probes of the injector!! Is it possible or i messed up my resistance test? Thanks! I heard that solenoid injector can have .3ohms of resistance and working fine!

thanks for that review 👍🏻

Thanks for sharing man! I just found an injector on my 2000 Windstar van that makes no difference in the sound of the mildly skipping engine when I unplug it. When I unplug any of the other 5 the RMPS drop a couple 100. Now to find out whats wrong with it.-_-

This test just tells you which injector is bad how do i know if its clogged?

Hey what if your testing your fuel injector for ohms and the multimeter just beeps like when you touch the ends together? Help please

Thanks for your video and its possible to test without taken it out from the engine?

Great video and explanation. Thank you

I test injectors on a motorcycle today in wondering on mine is shows 12.8 - 12.9 ohms but one of the injectors shows at 13.5 ohms is that mean that when is going bad that's open

sir my injector i check alredy multimeter 13.6 omh.it is good or bad?

Can doing this test show that it's leaking or your just testing if it is good?

Hey johnny i know this question is kinda unrealated to this video but i thaught id ask it any way im rebuilding the top end on an outlaw 90 and dropped a circlip into the bottom end what can i do to get it out?

hi how to adjust idle without an inductive tacho

Mine does a long beep and 0L before it settles

Thanks . I whel test in my w140

Bravo procedura giusta!

Good job!! Is the 16.3 for all cars injectors? what is the Chevy measure?

Ok, lets say 16 ohms its the regular spec, what if one injector its 10 ohms? What does that mean? Gonna give more flow or less?

Very helpful thanks

Hi, thanks for the video s... Question.... So when the injector are bad.....don't shows up any number??? And what's the good number & bad number .....Thank... u very much....for helping us.

What if the resistance is 0.0 ohms ?

Thx, I just heard about this test I have had a number of issues trying to diagnosis a missing w/ my 1995 Roadmaster. I recently discovered and replaced both catalytic converter's bcoz of being plugged, which I think may have harmed the EFI's. I used my cheap voltmeter w/ setting on 2000 Ohms and I got .015-.017 on 5 of the EFI's and 3 had readings of .005-.007 so I think there maybe a problem w/ those 3 which are on the side of the cat that was mainly plugged. Also my mechanic said that side was running lean. Any advice in appreciated. Thx

What is your recording setup? It's good.

I hate videos that test GOOD equipment. We are here to learn about faulty equipment, if we don't have problems, we'd watching a movie. Silly , really.

Bhai zmr baik ghatke. Maar rahi ha kya hua hoga

Interesting

*Omega

Very important us

So what's the point then ?

Hi, I was de-subbe somehow and I can't find the other channel to sub again could you send me a link or something?

Cant we just put it on continuity

Maltymeter yeast

all that mumbo jumbo and did not state a resistance Ohm range for that injector. Although stating most are about the same, he says he has no idea. Wrong, he has a good idea of a range, but not your specific make and model range. Just ballpark it or state the range of your injector, something when doing a how to test using a multimeter.

Just get to it. You wasted 2 minutes blabbing

awful video. cut the chat get on with it. And there is no pos and neg on the injector

Useful information, many thanks.

I did this same thing with my 99 Camry all read 14.0 ohms and 1 doesn't read at all so I'm thinking this 1 injector is bad

continuity is a good test for a melted coil wire.. cool. Note: if your mechanic says more than one injector has failed, that would be a MIGHTY big coincidence so go out into your garage at midnight and check for aliens in flying saucers firing ray guns at your engine. Or find another mechanic

What about if I test my injector it test fine within spec and then I waited a few minutes tested it again and it showed open loop 0L on my multimeter I made sure my connections were good

Hi. Very good video. Could you tell me, does the same apply to an adblue injector? Thanks. Toby

Alligator clips

Sir is more resistance means rich mixture ? And bad millage ? My Hyundai santro 2004 are giving me 16 ohms resistance what does that means ? Edit And I Don't know what company manual said about their resistance

i measured on two of them and both have 12.0 ohms but one does not work instaled in car and changed position and same thing and all were tested and cleaned and they said it is ok

He likes saying probe

SWEDISH PLEASE !!!

What about if all my injectors are 17 but one go to 22 ?

You will know if an injector is bad if the reading of one injector is out of the 15% range of the average of all your injectors' readings

Thanks! My Millenia is giving me the blues trying to track down the issue of raw fuel inthe exaust & cylinders. Any suggestions would be greatly appreciated. (Engine has under 50k miles)

ok ok my motorcycle injector displays 1 ... he's dead I think or not?

Where do I get specs from? Can't find any. I'm using autodata online but it doesn't give any specs for resistance...

cara mengecek sensor

I've tested all 4 of mine and they all said 2.5 ohms but when I did the AA battery test only 2 would click, do you have any idea what could be wrong with them?

What should be resistance of injectors?

Are you from canada or usa?

First reading was 16.1 ohms. The second reading was 15.9. The difference isn't worth worrying about, but notice that you steadied both probes with your fingers, creating a parallel path, and reducing the resistance. Oh, and your fingerprints are visible. I'm going to copy them and leave them all around a bank that was just robbed! Buawahahahahhaahha! j/k ;)