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 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”. :-)
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!!!
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
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.
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 😎
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.
Christ this got to be an old video because we cannot see the numbers on the meter... YOU KNOW YOU MAKE THE BEST UA-cam AUTOMOTIVE HOW TO VIDEOS IN VIDEOS STEP BY STEP IN THE THE WORLD BRO !😊
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.
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)!!!
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.
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
Dear Chris, I have a 2004 Grand Marquis, (I'm the original owner, about 230,000 miles on the car) and have had an ongoing problem with the engine light coming on after driving the car for a while. Symptoms are rough idle after the car comes to a stop; usually slows down to around 550 rpm, plus or minus after 20 to 30 seconds of coming to a stop, followed by occasional shuddering on acceleration. I've had the car to two mechanics. Before taking it to any mechanics, several months ago I replaced all the plugs and coils. Lately, one mechanic replaced all the plugs, which had less than 11,000 miles. He replaced the number 5 coil. A week later I bought a new air idle control valve and a new throttle position sensor and had him install them. He checked for vacuum leaks and twice he told me he found vacuum leaks. None of these new parts or service have solved the problem. I put a scanner on to see what code appears when the engine light comes on. It's 0355, which is the #5 cylinder. Another mechanic noticed the #5 coil was somewhat loose. He noticed the thread was stripped on the coil bolt, so he dropped a piece of plastic wire tie in the bolt hole of the manifold, and that made the bolt tight. Then he used a couple of plastic wire ties to secure the connector to the coil. He erased the code, and the engine light stayed off, until I drove the car about 20 miles the next day, it came back on. On the last two gas fill ups, I put a bottle of lucas fuel injection cleaner in the tank at each fill up. I also tried spraying contact cleaner on all the coil connectors, and several other electrical connectors. Is there any thing else you might recommend or (GOD FORBID) should I take it to a Ford dealership? Thanks for all the help you give to so many people !!!
Did you get it fixed? I'm fighting a constant cylinder 5 misfire on my 2001 Grand marquis. Same symptoms. Drops to 550 RPM after a long drive / warmed up then sets cylinder 5 misfire.
@@mmiller1188 HI Mike and I'm thrilled that you replied. YES, I got it fixed, and I can probably help you get your problem fixed. I live in Miami, and first I'll tell you I went to about 6 Ford dealers before finding a seventh who fixed the problem. I found a guy on youtube who was a Ford Master Technician, who explained the problem, something the first 6 Ford dealers did not even mention, and did not even suggest. IF you have replaced plugs and coils, and other parts , and you still have misfiring, then your main computer needs to be reprogrammed. First , you need to find a Ford Dealer who will reprogram your main computer. Symptoms of a main computer that needs reprogramming are 1. engine light continues to come back on 2. rough acceleration 3. Eventually the misfiring will shut down your AC compressor , a built in feature that protects the AC compressor. Once the main computer is reprogrammed, that problem will be corrected. It is remotely possible to reprogram your own computer, but probably more complicated that you or I would want to risk. You first would need a bidirectional scanner, which allows you to reprogram your main computer. You would have to purchase a "FORD" subscription when you purchase the bidirectional scanner. Then you would need to know how to to reprogram the computer using the scanner. If you take it to a dealer that will reprogram your main computer, they will check for any bad coil connectors, bad vacuum tubes, or any other problems related to your ignition. Before I knew the main computer could be reprogrammed, I wasted a lot of money on mechanics replacing parts that did nothing to fix the problem. I tried replacing all the plugs and coils, and still had the same problem. IF a dealer tells you that you may need to replace the main computer, I would be skeptical. FIrst ask them if they can reprogram your main computer. If they tell you that can't be done, find another Ford dealer. Pines Ford in Pembroke Pines FL, did mine. The last time I had it there about 2 months ago, they replaced all the coils, replaced two coil connectors, reprogrammed the main computer, total price was 940 dollars. On a previous visit, they replaced a coil and a vacuum tube. IF you know the mileage on your current plugs and coils, if there are a lot of miles on them, then have them replaced before they reprogram the main computer. Ask the dealer to inspect the coil connectors, vacuum tube, etc. if you have your plugs or coils replaced. Let me know if you have any questions, and how things work out.
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
This is worth a try, my truck has had horrible gas mileage since I bought it. Close to 100 miles per tank, I'm not sure what it's supposed to be rated at. I'll try this tomorrow, great video.
wow, that is basically my truck and I get 18mpg (actually after the plugs and wires replacement and power steering flush, I have been getting 19.6mpg which is my best yet). No check engine lights? How is the idle? At 55mph what rpm are you at?
Let me know. I will have a video coming out on MAF cleaning that might help. Is there any black soot at the end of your exhaust or on the body of the truck by the exhaust (indicating it is running rich)?
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 :-)
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.
Hopefully you are still monitoring questions?! 2005 Pt Cruiser GT 2.4 Turbo: showing p0203, p0032 and p0038. I see that 32/38 are related to o2 sensors, I am going to test injectors later today, but do you think it's possible that if there is a failed injector, could this be leading to the o2 sensor related codes? Thanks
Hey Chris.. you look, sound and know Alot about cars like my Mechanic Chris... Did you boys get messing around with the Cloning machine again? 😆 Awesome stuff buddy 😁 I can't explain things like you guys are blessed with. 👌
+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
Greetings Chris: I have a nissan sentra and the resistance test gave me the following result: Cylinder 1: 11.5 Cylinder 2: 0 Cylinder 3: 48 Cylinder 4: 12.6. I think the only good injector is the 4. The question is why does cylinder 3 give such a high reading? Thank you in advance.
Bro thank you. I keep getting a very annoying p0303 on my tacoma. Giggles and you can feel the misfire. I changed out the coils and spark plugs but the code keeps popping up every once in a while when I erase it. Gonna try this when I have a chance.
hey chris quick thing to note, you should really check the resistance of the meter/test leads by touching the 2 leads together than subtracting that number from your reading (I noted all steps for viewers)
+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?
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 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
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.
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.
I was showing a #3 misfire so I did a complete tune-up. The tune-up made a big improvement but it still shows a #3 misfire even after clearing the codes. A compression test said the engine is fine. The shops want a average of $100 just to diagnose. . One mechanic told me that all these fuel additives don't really "clean" an injector; if an injector is "bad", cleaning it won't help. Interesting. That would mean that all these fuel additive products are a rip-off!! Another shop said they will clean the injectors (without removing them from the engine) for $100. That could possibly be a rip-off too? From what you are saying, I should test the ohms and also the fuel pressure.That sure seems easy and simple enough.
Holly Metcalf It's true, most of those products that you can buy in a bottle aren't really that effective at cleaning your fuel system. While they do contain chemicals such as ether that CAN remove deposits, the problem is they don't remain in contact with the surface of the fuel-delivery system long enough to achieve the desired results. The only way to do this is to remove the injectors and soak them in powerful chemicals and/or mechanically remove the deposits. Consumer Reports did an article on these products a while back, and their conclusion was that these products are a waste of money. CR doesn't take ads (they are supported by subscriptions), so their articles are objective.
Hi Chris, my ohm reading are jumping all over the place. Also if they do stop at one number, when I come back to check them, the reading will be different. I read somewhere that this means the coil is partially open. Does that mean the injector is bad>
I have watched this three four times to make sure I get this right. I have a pt cruiser 2.4l turbo the same multimeter set on the exact same settings. The numbers were all over the place high hundreds to nothing the reading numbers never stopped. checked them off the car on the rail, individually and back on the car. Whats up with that??
I have a 2007 Jeep Liberty, My Question is, Would A Bad Fuel Injector Shut Off The Coil Pack From Working? I started My Jeep up and Check Engine Light Came on, P0204 and a P0304. I did that test where you unplug the coil while the car is running and no change in cylinder #4, So Ichanged The Coil Pack From Number 2 and The #4 Coil Pack Worked on The # 2 spot, but the #2 Coil pack Did not work on the #4 spot. So I am Confused now.
Hey Chris! Ran a fuel pressure test on my 2003 Ford ranger 4.0 and KOEO result gave me a leaking pressure. Started at 55 psi and leaked to 0 in a matter of 2 minutes maybe less. Cranked the engine up and it was at a steady 66 psi (manual says 64 +- 8). Should I check the injectors and if so, do I disconnect the battery terminal? Also, I don't see a fuel pressure regulator like on your vette so I don't know if I can check the vacuum line for gas smells. Thanks!
Hey Cris my son has a 2002 Nissan Xterra I have replaced everything on the vehicle maintenance wise. He has been randomly getting a cylinder to misfire it’s very intermittent some days his car will run perfectly fine some days it won’t run right and it will send the engine code P0 302. If his injector was bad wouldn’t that be a constant and not intermittent like this
Dang 10 years later and this video just saved me $300 from a tow and diagnosis. Chrisfix will always be a legend!!
You are a great teacher - it's so fast like being taught in the matrix with a software install
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!
Good point, but i think the manufacturers account for that user error and people who need to measure more sensitive devices know this, already.
@@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”.
:-)
testing leads read 5.1 testing the injector read 16.5 so 11.4 is the result. Is this the correct reading?
Hey, my injectors are showing 0.8 ohms, is that normal? Low resistance injectors?
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!!!
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
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.
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 😎
Well that would fall under the whole looking up the impedance for your specific injectors thing that he mentioned.
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.
I love the fact that your vids are simple straght to the point
That is ChrisFix for you. He is THE BEST
Amazingly simple stuff and brilliant guide. Thank you!
+Pawel Tulik No problem! Glad you liked the video!
Christ this got to be an old video because we cannot see the numbers on the meter... YOU KNOW YOU MAKE THE BEST UA-cam AUTOMOTIVE HOW TO VIDEOS IN VIDEOS STEP BY STEP IN THE THE WORLD BRO !😊
Now i have found my favourite youtube diy channel. Keep it up chris!
Like the way this guy explains things so simple. Cool tutorial bro.
I can't stop tutorial videos like yours very informative and interesting
This helped me out today. Never did fuel injectors thank you
there's a valid reason why you have over 8 millions subs Chris. You're one of the best at what you do!
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?
Thanks for the help!
Thank you for explaining everything in simple terms
You made two videos in one day? As much as I would love two videos, the quality is is worth the wait.
Enjoyed this video- have same multimeter as Chris, it worked exactly as he demonstrated- thanks...
You have done a good job man big up❤
I just want to thank you for your video, helped me to diagnose a bad injector.
***** Awesome! I am glad my video helped! Good work! New automotive "how to" videos every Thursday and most Mondays so stay tuned!
Love it that I googled a problem and fixid sent me to my favorite UA-camr !
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.
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)!!!
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.
Hey Chris! You've saved me over a thousand dollars! Thanks buddy.
Good for you. That's awesome!
You are a big help to me Chris. You add alot to my automotive aptitude.
Thanks for fixing it Bro so we can see the numbers!
You are a legend with your well rehearsed "How To"s. thanks man !
Just want to say thanks for the video. Showed me what I needed to no to test my injectors on my Jeep
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
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
you are among the best.
im not surprised if soon you will hit 10m subs.
The was a very useful video. I was able to test and replace my bad fuel injector!
How to know if we have injector are leaking down or cloged ıs there any test for that? Thank you for your great videos
Dear Chris, I have a 2004 Grand Marquis, (I'm the original owner, about 230,000 miles on the car) and have had an ongoing problem with the engine light coming on after driving the car for a while. Symptoms are rough idle after the car comes to a stop; usually slows down to around 550 rpm, plus or minus after 20 to 30 seconds of coming to a stop, followed by occasional shuddering on acceleration. I've had the car to two mechanics. Before taking it to any mechanics, several months ago I replaced all the plugs and coils. Lately, one mechanic replaced all the plugs, which had less than 11,000 miles. He replaced the number 5 coil. A week later I bought a new air idle control valve and a new throttle position sensor and had him install them. He checked for vacuum leaks and twice he told me he found vacuum leaks. None of these new parts or service have solved the problem.
I put a scanner on to see what code appears when the engine light comes on. It's 0355, which is the #5 cylinder. Another mechanic noticed the #5 coil was somewhat loose. He noticed the thread was stripped on the coil bolt, so he dropped a piece of plastic wire tie in the bolt hole of the manifold, and that made the bolt tight. Then he used a couple of plastic wire ties to secure the connector to the coil. He erased the code, and the engine light stayed off, until I drove the car about 20 miles the next day, it came back on. On the last two gas fill ups, I put a bottle of lucas fuel injection cleaner in the tank at each fill up. I also tried spraying contact cleaner on all the coil connectors, and several other electrical connectors.
Is there any thing else you might recommend or (GOD FORBID) should I take it to a Ford dealership?
Thanks for all the help you give to so many people !!!
Did you get it fixed? I'm fighting a constant cylinder 5 misfire on my 2001 Grand marquis. Same symptoms. Drops to 550 RPM after a long drive / warmed up then sets cylinder 5 misfire.
@@mmiller1188 HI Mike and I'm thrilled that you replied. YES, I got it fixed, and I can probably help you get your problem fixed. I live in Miami, and first I'll tell you I went to about 6 Ford dealers before finding a seventh who fixed the problem. I found a guy on youtube who was a Ford Master Technician, who explained the problem, something the first 6 Ford dealers did not even mention, and did not even suggest. IF you have replaced plugs and coils, and other parts , and you still have misfiring, then your main computer needs to be reprogrammed. First , you need to find a Ford Dealer who will reprogram your main computer. Symptoms of a main computer that needs reprogramming are 1. engine light continues to come back on 2. rough acceleration 3. Eventually the misfiring will shut down your AC compressor , a built in feature that protects the AC compressor. Once the main computer is reprogrammed, that problem will be corrected. It is remotely possible to reprogram your own computer, but probably more complicated that you or I would want to risk. You first would need a bidirectional scanner, which allows you to reprogram your main computer. You would have to purchase a "FORD" subscription when you purchase the bidirectional scanner. Then you would need to know how to to reprogram the computer using the scanner.
If you take it to a dealer that will reprogram your main computer, they will check for any bad coil connectors, bad vacuum tubes, or any other problems related to your ignition. Before I knew the main computer could be reprogrammed, I wasted a lot of money on mechanics replacing parts that did nothing to fix the problem. I tried replacing all the plugs and coils, and still had the same problem. IF a dealer tells you that you may need to replace the main computer, I would be skeptical. FIrst ask them if they can reprogram your main computer. If they tell you that can't be done, find another Ford dealer. Pines Ford in Pembroke Pines FL, did mine. The last time I had it there about 2 months ago, they replaced all the coils, replaced two coil connectors, reprogrammed the main computer, total price was 940 dollars. On a previous visit, they replaced a coil and a vacuum tube. IF you know the mileage on your current plugs and coils,
if there are a lot of miles on them, then have them replaced before they reprogram the main computer. Ask the dealer to inspect the coil connectors, vacuum tube, etc. if you have your plugs or coils replaced.
Let me know if you have any questions, and how things work out.
Even way back when you were and are great! Thanks Chris for the priceless info!
Thanks and glad the video was helpful!
Nice job Chris you always do such a great job on your videos.
Really good the way you explain ,step by step.
Great video Chris, not surprised you got 5.6M subs, wow!
This is a really helpful video of yours which serves it's purpose even now.
Thanx Chrisfix.
Great video Chris clearly showing how to test. Thanks :)
Great video. Can bad injectors cause car to go into intermittent limp mode? Especially when accelerating from a stop light. Thanks
Appreciate you sharing this. Helped me alot. Very quick and easy explanation.
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
Best toturials!! Thank you ❤
Thanks man, good job! Fast and quick to the point.
This is worth a try, my truck has had horrible gas mileage since I bought it. Close to 100 miles per tank, I'm not sure what it's supposed to be rated at.
I'll try this tomorrow, great video.
What truck? What year? How many miles? Have you tried this: How to Check for Bad Spark Plug Wires
ChrisFix it's a 1999 Ford ranger 4.0l v6, 4x4 with 140,000 miles. I have replaced the spark plugs and wires.
wow, that is basically my truck and I get 18mpg (actually after the plugs and wires replacement and power steering flush, I have been getting 19.6mpg which is my best yet). No check engine lights? How is the idle? At 55mph what rpm are you at?
ChrisFix No there haven't been any check engine lights yet, the idle sounds normal. I would have to check the rpm sometime.
Let me know. I will have a video coming out on MAF cleaning that might help. Is there any black soot at the end of your exhaust or on the body of the truck by the exhaust (indicating it is running rich)?
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 :-)
Awesome tip! Thanks bud!
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.
+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.
I love short and to the point videos! (plus it's totally logical advice) 👍👍👍
Hopefully you are still monitoring questions?! 2005 Pt Cruiser GT 2.4 Turbo: showing p0203, p0032 and p0038. I see that 32/38 are related to o2 sensors, I am going to test injectors later today, but do you think it's possible that if there is a failed injector, could this be leading to the o2 sensor related codes? Thanks
P0203 3rd is injector I guess the injector dosent opening
The problem is you're driving a PT cruiser
Great teaching
Hey Chris.. you look, sound and know Alot about cars like my Mechanic Chris... Did you boys get messing around with the Cloning machine again? 😆
Awesome stuff buddy 😁 I can't explain things like you guys are blessed with. 👌
Straight to the point good video.
This may seem like an obvious question, but is it safe to simply detach the battery terminals prior to running this test?
+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
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 ✌
@@@jaicabryizky6987 its a cen-tech from harborfreight they also have different models inexpensive and such a great tool hope this helps you
Can you check the ohms with the rails installed? If so, do you unplug the negative cable from the battery or can leave it on?
Thanks for taking the time, good straight video
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!
Thanks! Yea, I was curious of how how close my injectors resistance was to each other too!
This guy is awesome
Thanks a lot!
Thanks so much. I'm going to do it today
Let me know how this goes!
Love your vids. Short and sweet.
Greetings Chris: I have a nissan sentra and the resistance test gave me the following result: Cylinder 1: 11.5 Cylinder 2: 0 Cylinder 3: 48 Cylinder 4: 12.6. I think the only good injector is the 4. The question is why does cylinder 3 give such a high reading? Thank you in advance.
Bro thank you. I keep getting a very annoying p0303 on my tacoma. Giggles and you can feel the misfire. I changed out the coils and spark plugs but the code keeps popping up every once in a while when I erase it. Gonna try this when I have a chance.
hey chris quick thing to note, you should really check the resistance of the meter/test leads by touching the 2 leads together than subtracting that number from your reading (I noted all steps for viewers)
jljr1998 Even so you would probably still measure within tolerance of the injectors specification. A bad one will deviate a lot more than 0.5 Ohm
I think one of my fuel injectors is bad because of an occasional cylinder misfire. Good to know I can test the injectors to make sure
+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?
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.
@@OtherDalfite cam you do the same thing for the coil packs for spark?
@@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
I tried can shaft position sensor and got it to run just a little rough still
theses are awesome videos! any chance you have one testing an ignition coil?
Sir can i connect the negative directly to the ground. And is it possible it will run even one or injection is not working
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.
Kevin N Could be injectors. I would change out your fuel filter if you havent already.
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.
As usual it's nice video, Chris.I like much your way of educating like us beginners.Keep Spirit Up
very good master
I was showing a #3 misfire so I did a complete tune-up. The tune-up made a big improvement but it still shows a #3 misfire even after clearing the codes. A compression test said the engine is fine. The shops want a average of $100 just to diagnose. . One mechanic told me that all these fuel additives don't really "clean" an injector; if an injector is "bad", cleaning it won't help. Interesting. That would mean that all these fuel additive products are a rip-off!! Another shop said they will clean the injectors (without removing them from the engine) for $100. That could possibly be a rip-off too? From what you are saying, I should test the ohms and also the fuel pressure.That sure seems easy and simple enough.
Holly Metcalf It's true, most of those products that you can buy in a bottle aren't really that effective at cleaning your fuel system. While they do contain chemicals such as ether that CAN remove deposits, the problem is they don't remain in contact with the surface of the fuel-delivery system long enough to achieve the desired results. The only way to do this is to remove the injectors and soak them in powerful chemicals and/or mechanically remove the deposits. Consumer Reports did an article on these products a while back, and their conclusion was that these products are a waste of money. CR doesn't take ads (they are supported by subscriptions), so their articles are objective.
best video, simple and easy. you are the best
Awesome video! Thank you!
Hi Chris, my ohm reading are jumping all over the place. Also if they do stop at one number, when I come back to check them, the reading will be different. I read somewhere that this means the coil is partially open. Does that mean the injector is bad>
I have watched this three four times to make sure I get this right. I have a pt cruiser 2.4l turbo the same multimeter set on the exact same settings. The numbers were all over the place high hundreds to nothing the reading numbers never stopped. checked them off the car on the rail, individually and back on the car. Whats up with that??
Excellent chris ,you gave me an idea i check the ohms of all the injectors and reject the cuckoo 😅
What is the resistence on a ignition coil..man...by the way....your videos are bad ass...you that men buddy...
Thanks Chris , great video ❤
Fantastic information!
Another great video thanks Chris
Very useful information...thanks Chris..!!
Is there a video on how to clean injectors?
Thanks a lot! I'm planning on doing that soon! Stay tuneeeed!
Прекрасно видео. Поднесено е изключително професионално, лаконично и много, много точно. Благодаря! Успехи и нови очаквания!
Иванов Н. Oh, totally bro. I hear ya -- we all hear what you're saying.
I see you shop at harbor freight also. Can't beat the price. A multimeter for 7 bucks.
Ok that is testing the injectors. What about the wiring and plugsthat come from the PCM/ECM and plug into the injector port?
I have a 2007 Jeep Liberty, My Question is, Would A Bad Fuel Injector Shut Off The Coil Pack From Working? I started My Jeep up and Check Engine Light Came on, P0204 and a P0304. I did that test where you unplug the coil while the car is running and no change in cylinder #4, So Ichanged The Coil Pack From Number 2 and The #4 Coil Pack Worked on The # 2 spot, but the #2 Coil pack Did not work on the #4 spot. So I am Confused now.
Never disappoint, sir! Tx for the video!
Could this be the reason why my car vibrates bad when idle? That's the only time it vibrates though. Awesome videos!
thanks great video and explanation..
Hey Chris!
Ran a fuel pressure test on my 2003 Ford ranger 4.0 and KOEO result gave me a leaking pressure. Started at 55 psi and leaked to 0 in a matter of 2 minutes maybe less. Cranked the engine up and it was at a steady 66 psi (manual says 64 +- 8). Should I check the injectors and if so, do I disconnect the battery terminal? Also, I don't see a fuel pressure regulator like on your vette so I don't know if I can check the vacuum line for gas smells. Thanks!
It is great to have someone out there with such God given talents. Well done! dude :0) and thank you so very much.
+Happy Murray Thanks! Glad the videos are helpful!
Thanks Chris - 5 minutes ago I didn't know dick about injectors .... now, I'm going to test my injectors in the morning. (For Free)
aljoe Awesome! That is why I make these videos!
Great video man. Your videos have really helped me a lot.
Great! Glad the videos have been helpful!
Hey Cris my son has a 2002 Nissan Xterra I have replaced everything on the vehicle maintenance wise. He has been randomly getting a cylinder to misfire it’s very intermittent some days his car will run perfectly fine some days it won’t run right and it will send the engine code P0 302. If his injector was bad wouldn’t that be a constant and not intermittent like this
Keep up the good work
Chris I measured them one day and had different readings each! I test them again the next day and were all the same! Any ideas?
Try it one more time and see what happens, I'm thinking your multimeter settings were off the first day or it was just a fluke
@@chrisfix I will 👍
Please sir can drop us a video how to discover positive and negative using a multimeter when testing