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)?
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.
Hey Chris, my 1993 Legacy RS Turbo Subaru has suddenly lost boost. It drives okay at low speed, no stalling or stuttering etc and idles smooth but is just noticeably weaker and will not boost and has no power when I accelerate. I checked the codes and got a fuel injector code. It did run out of fuel while driving the other day. Could a blocked or failed injector be causing this? Thanks
Ok. So I have a problem, with my Saab 900 16-valve Turbo. My engine is idling very poorly and i get misfires often, feels and sounds like it's running on three. I checked the resistance of the injectors and they all showed normal readings (2.8 ohms). I also did the test with the screwdriver and they all sounded pretty good. Any ideas, what could be wrong?
*question* car is turbo in line 4, code is p1701. would a bad injector that is not firing efficiently cause the car to run lean in boost. ecu is showing *over compensating* fuel corrections. car smells rich in idle sometimes.
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 😎
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”. :-)
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
+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
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.
+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! 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.
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.
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.
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
So I had a flashing check engine code on our car. Scanner said cyl 6 misfire and cyl 6 fuel injector. Car started running good, I did the screwdriver check and could hear the pulses. Then car started running bad so I listened for the pulses thought I could hear them. So checked the Ohm on cyl 6 against 4 and 5. Cyl. 4 and 5 were the same, cyl 6 didnt even read. So was I hearing residual pulses from another injector?
Hey Chris, can you test the fuel injectors with the multi-meter while they are in the engine but the wires are disconnected? I didn't know if that makes any difference. Thanks a lot. John
Can anyone help, have a cmax tdci1.6 that's gone into limp mode and very rough,code p1261 cylinder 1, I would replace and recode but the 3 others are reading ol on multimeter and the one that supposed to be bad is reading normal ,I expected it the other way around, ,side note just tested an abs sensor as was coming up faulty reading ol ,replaced it with new one and still ol but is working fine,is my multi meter backwards or something ,I don't get it
checking resistance does not necessarily mean your injectors are good.. Obviously, if 1 or more is really out of whack, compared to the others, after ensuring your leads are making good contact on injector terminals, then they're junk.. but a good reading might pass a bad injector. An electrical item at rest vs the same item at work.. I tested a set of injectors on a car once probably 6 times.. finally, one tested near dead short.. the best test, if possible is to the amp draw on a working injector
It would indicate a bad injector if the resistance is way off the spec/other injectors. A dirty injector is still usually working correctly, it would just need a cleaning so it shouldn't show up differently.
@@chrisfix so to add on from this, if you already swapped in new spark plugs, and you know the coil packs are okay. After doing this test and the injector is showing okay but still a misfire on that 1 cylinder, the only 2 other possibilities would be clogged injector or major engine repair right?
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>
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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 !😊
ChrisFix I heard that! Unfortunate I’ve got some messed up. I went ahead and ordered a set of 6 and gonna replace all them cause if I’m gonna break down my plentum and valve covers to get to mine, I might as well do them all. Thanks for the info though I appreciate it!!
chris my problem is i have a dodge neon2005 4cyl. 2.oL code p0303 i change everything and still have code p0303 help sos i trust your jugdement thank you
Testing ohms on the injector only tells the resistance,not if it has mechanical failure,always,always when testing the injector u think is bad take it out and see if it sprays,just like a starter u can have amps to it and it still be mechanically bad.
All my resistance measured the same, I have volt in my fuel injector connection. I don’t have a misfire code. Just a p0201. Should I replace the injector anyway?
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!
@@chrisfix no it's a 6 cylinder 2010 Ford fusion sport. I got a check engine and when I scanned it, it's cylinder 4 misfire and running too rich along with an injector I think staying open. I checked fuel injector 4, 5 and 6. Injector 4 ohm reading is 27 ohms. Injector 5 and 6 both read 14.7 ohms. I am not sure if changing the injector for cylinder 4 would fix the issue
Is there a typical number of years or miles injectors should last? My 2004 VW GTI has 140K miles and the original injectors. The fuel rail and injectors were cleaned only once at around 80K mile. The car has only been filled with manufacturer recommended 91 octane gasoline at each fill up, and runs great. Roughly every 4 months I put a bottle of Lucas injector cleaner in the gas tank at fill up. Should I be concerned?
Hi there!Did you make a video on how to remove seized or stuck injectors in your channel? Also, everytime I hear you talking with the gloves moving around like puppets... that makes me laugh!!But your tips are great.Thanks for sharing.
This is a good test, but it ONLY tells you if the coil is shorted/bad, it doesn't do a thing to tell you if the injector is clogged or the spring is broken. For that the easiest test is to disconnect the injectors ONE AT A TIME and see if they make a change to the engine or not. The one that DOESN'T make a change to the current sound is likely the bad one, as the working ones are noticeable when they're pulled offline.
hay Chris i have a 95 econoline. with that video of you i discover that my fuel injector arn clicking uneven but if i replace it for a new one does it the same so i dont know what to do . it is a 5.8l windsor engine . nick
Hey Chris, I have a 85 se Fiero it starts up and I drive about 20 miles or more then when i try to start it cranks but won’t run until it cools down . What you think?
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.
Chris all y injectors read 0.0 but the truck runs great. And also the fuel pressure is a few psi of what it should be. I’m stumped. I’m not a mechanic just a UA-cam search guy.
My car Toyota yaris 2013 model.... Has a lot of engine vibration and its injector number one not working, I've called an electrician to run the test. The electrician says there wire supplying injector number one is not having power... So we tried to remove the whole wire and see mybe if the rat had bitten the wire, nothing the wire is fine..... So can you advise me on what else can I check out for troubleshooting........ However the car is drives but I'm not happy with the engine vibration
I have a 2003 Dodge Ram 1500 4.7 engine turns on but struggles to take off sometime will turn off at a stop or running turns right back on but same thing lags very badly
3 injectors on my car are at 11-12 ohms at spec. One was miss-firing and read 18 ohms. In cylinder 3. According to that reading on that injector , is it a bad injector even at 18 ohms ?
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 :-)
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
Hey man where you from?? I have a ford 4.2 that sound like a diesel with misfire and lean codes and have had 3 mechanics give it back saying they can't find the problem
I must have one with ohms off just enough that it only starts failing once it heats up. Worst part is, I've seen it, I can touch it...but I have to remove a whole intake manifold just to access it for replacement.
I have a 2015 Dodge caravan changed the injectors and spark plugs and coils it was running fine for a few days later it starts shaking diagnosed it and I got a po305 code checked it changed the coil and spark plugs to another cylinder and got the same code po305 someone suggested testing the fuel injector the clips can't come off unless I take the injector out which I really don't wanna do that unless I really have too can i test it with the electrical plug in the injector please advise me thank you 🤙
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??
Dang 10 years later and this video just saved me $300 from a tow and diagnosis. Chrisfix will always be a legend!!
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)?
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.
Best toturials!! Thank you ❤
Really good the way you explain ,step by step.
would I have to remove the whole thing out the car to test it with the ometer? or can I test it with the injector on the car with the ometer?
+Jaime Padilla You can test it still in the engine. No need to take it out.
Fantastic information!
excellent video,,,,,thanx for this
Zia Din You are welcome! New automotive 'how to' videos every Thursday and most Mondays so stay tuned!
c
Will you teach us how to clean fuel injectors? Respectfully a huge fan.
Hey Chris, my 1993 Legacy RS Turbo Subaru has suddenly lost boost. It drives okay at low speed, no stalling or stuttering etc and idles smooth but is just noticeably weaker and will not boost and has no power when I accelerate. I checked the codes and got a fuel injector code. It did run out of fuel while driving the other day. Could a blocked or failed injector be causing this? Thanks
Ok. So I have a problem, with my Saab 900 16-valve Turbo. My engine is idling very poorly and i get misfires often, feels and sounds like it's running on three. I checked the resistance of the injectors and they all showed normal readings (2.8 ohms). I also did the test with the screwdriver and they all sounded pretty good.
Any ideas, what could be wrong?
*question*
car is turbo in line 4, code is p1701. would a bad injector that is not firing efficiently cause the car to run lean in boost.
ecu is showing *over compensating* fuel corrections.
car smells rich in idle sometimes.
I STOPPED WATCHING SCOTTY KILMER BECAUSE OF YOU!!!
Thats because Chris doesn't yell at you.
@@samd8054 and he gets to the point quickly.
Chris doesn't yell,,,,,, "Rev up your engine"!
That's my boy tho
Lol… he had some points.. good and bad.. no one perfect
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.
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?
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
+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
Amazingly simple stuff and brilliant guide. Thank you!
+Pawel Tulik No problem! Glad you liked the video!
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.
+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
You are a great teacher - it's so fast like being taught in the matrix with a software install
Now i have found my favourite youtube diy channel. Keep it up chris!
The was a very useful video. I was able to test and replace my bad fuel injector!
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.
My Bugatti Has P0300-P0316
lol
P03 is ignition related issue
Abdoulie Jallow P03 is a misfire the number after is the cylinder that is misfiring
lol
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.
theses are awesome videos! any chance you have one testing an ignition coil?
How to know if we have injector are leaking down or cloged ıs there any test for that? Thank you for your great videos
Why don't you ever work on e350 econoline van 5.4 2valve extended 2011, or are they to big ?
If I owned one I would work on it!
Misfire jerking gas !! If injectors ti done clicking blocked will it show ? I did clicking idea all ok ?
It's possible one is broken, i'd pull them and look for physical signs of damage
What's the thing called that exposes the two prongs. Not sure what its called but I need the name for an assignment. Thanks
The thing that gets pulled out? I call that a wiring harness pigtail or just a connector!
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.
I love the simple straight to the point short answer for what i was looking for!!! Thank you 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!!!
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
Hey Chris! You've saved me over a thousand dollars! Thanks buddy.
Good for you. That's awesome!
If the spec its lets say 16 ohms, what does mean one injector its at 10 ohms? Gonna give more or less flow?
You have done a good job man big up❤
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 👍
So I had a flashing check engine code on our car. Scanner said cyl 6 misfire and cyl 6 fuel injector. Car started running good, I did the screwdriver check and could hear the pulses. Then car started running bad so I listened for the pulses thought I could hear them. So checked the Ohm on cyl 6 against 4 and 5. Cyl. 4 and 5 were the same, cyl 6 didnt even read. So was I hearing residual pulses from another injector?
Is the battery connected during testing on this fuel injector ?
No, you need to unplug the harness to test the injector so the battery is not doing anything
Hey Chris, can you test the fuel injectors with the multi-meter while they are in the engine but the wires are disconnected? I didn't know if that makes any difference. Thanks a lot.
John
Can anyone help, have a cmax tdci1.6 that's gone into limp mode and very rough,code p1261 cylinder 1, I would replace and recode but the 3 others are reading ol on multimeter and the one that supposed to be bad is reading normal ,I expected it the other way around, ,side note just tested an abs sensor as was coming up faulty reading ol ,replaced it with new one and still ol but is working fine,is my multi meter backwards or something ,I don't get it
If that $7 Harbor Freight multimeter is good enough for Chris Fix, it’s good enough for me!
checking resistance does not necessarily mean your injectors are good.. Obviously, if 1 or more is really out of whack, compared to the others, after ensuring your leads are making good contact on injector terminals, then they're junk.. but a good reading might pass a bad injector. An electrical item at rest vs the same item at work..
I tested a set of injectors on a car once probably 6 times.. finally, one tested near dead short.. the best test, if possible is to the amp draw on a working injector
What does this test tell us and doesn't tell us ? For exemple, would a dirty injector be out of specs ?
It would indicate a bad injector if the resistance is way off the spec/other injectors. A dirty injector is still usually working correctly, it would just need a cleaning so it shouldn't show up differently.
@@chrisfix so to add on from this, if you already swapped in new spark plugs, and you know the coil packs are okay. After doing this test and the injector is showing okay but still a misfire on that 1 cylinder, the only 2 other possibilities would be clogged injector or major engine repair right?
think I have a bad injector. rough Idle & occasional backfire thru the intake under load, but my back three injectors are under the intake manifold.
@@douik71 possibly jumped time. I know that will cause a backfire
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 see you shop at harbor freight also. Can't beat the price. A multimeter for 7 bucks.
😮 Holy Smokes‼️
Dude… 👻🙌🫶🤝🤜🤘👏👏👏Thank You, Thank You, Thank You!!!!!
I have been trying to figure out how to test the injectors… #3 specifically… on 2002 Lexus ES 300 with the VVI V6 …🥺😫😩 If You Know… You Know!!!
The head engineer of the this model… Must have caught his wife cheating with a mechanic⁉️ Having to take the entire top of the engine & everything attached to this …. just to change the spark plugs…😩 There just can’t be another answer… Right⁉️😁😂😂
It Absolutely Works Great 👍 Now I that #3 is bad and all I have to do now is…😩 Take the entire top of motor off, the vacuum system, the air box, the… 🥹
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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 !😊
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!
Thank you👍...always know that he has an answer😊good man!👍
Good stuff
Hey bro, how would u test the actual connector?
On the harness? Or on the injector itself?
Enjoyed this video- have same multimeter as Chris, it worked exactly as he demonstrated- thanks...
How many else were disappointing when none of them injectors were bad?!? Lol
Fortunately they weren't bad! It's pretty rare for them to go out anyways lol
ChrisFix I heard that! Unfortunate I’ve got some messed up. I went ahead and ordered a set of 6 and gonna replace all them cause if I’m gonna break down my plentum and valve covers to get to mine, I might as well do them all. Thanks for the info though I appreciate it!!
chris my problem is i have a dodge neon2005 4cyl. 2.oL code p0303 i change everything and still have code p0303 help sos
i trust your jugdement thank you
Like the way this guy explains things so simple. Cool tutorial bro.
Testing ohms on the injector only tells the resistance,not if it has mechanical failure,always,always when testing the injector u think is bad take it out and see if it sprays,just like a starter u can have amps to it and it still be mechanically bad.
All my resistance measured the same, I have volt in my fuel injector connection. I don’t have a misfire code. Just a p0201. Should I replace the injector anyway?
P216C OBD-II:
Fuel Injector Group "E" Supply Voltage Circuit High. Could this be a pressure sensor causing this code
would this test help determine if injector is stuck open? my vehicle is running rich , smoke out tailpipe, rough idle, long term fuel trim -14
Ok that is testing the injectors. What about the wiring and plugsthat come from the PCM/ECM and plug into the injector port?
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!
Thanks so much. I'm going to do it today
Let me know how this goes!
I checked 3 injectors. 2 injectors are around 14.7 ohms and the 3rd one is 27ohms. Does this mean the 3rd injector is bad?
Correct. You only have 3 cylinders?
@@chrisfix no it's a 6 cylinder 2010 Ford fusion sport. I got a check engine and when I scanned it, it's cylinder 4 misfire and running too rich along with an injector I think staying open. I checked fuel injector 4, 5 and 6. Injector 4 ohm reading is 27 ohms. Injector 5 and 6 both read 14.7 ohms. I am not sure if changing the injector for cylinder 4 would fix the issue
By the way, I checked cylinders 4, 5 and 6 because that's the bank facing me and available to check. Cylinders 1, 2 and 3 are under the intake
P0300 to p0312 not only 8. Some ppl drive v12 cars to
I don’t know how to find or access my fuel injectors to even test them. Could you help. 2002 Chevy Malibu
Is there a typical number of years or miles injectors should last? My 2004 VW GTI has 140K miles and the original injectors. The fuel rail and injectors were cleaned only once at around 80K mile. The car has only been filled with manufacturer recommended 91 octane gasoline at each fill up, and runs great. Roughly every 4 months I put a bottle of Lucas injector cleaner in the gas tank at fill up. Should I be concerned?
I wouldn't be concerned at all, if your car is running great and you are putting in quality gasoline, those injectors will last the life of the car!
Hi there!Did you make a video on how to remove seized or stuck injectors in your channel?
Also, everytime I hear you talking with the gloves moving around like puppets... that makes me laugh!!But your tips are great.Thanks for sharing.
Great video Chris clearly showing how to test. Thanks :)
This is a good test, but it ONLY tells you if the coil is shorted/bad, it doesn't do a thing to tell you if the injector is clogged or the spring is broken. For that the easiest test is to disconnect the injectors ONE AT A TIME and see if they make a change to the engine or not. The one that DOESN'T make a change to the current sound is likely the bad one, as the working ones are noticeable when they're pulled offline.
Ryan do I do that while the engine is running? Thanks, Becky
That still doesn't tell you if it's clogged or shorted just that it is bad lol.
hay Chris i have a 95 econoline. with that video of you i discover that my fuel injector arn clicking uneven but if i replace it for a new one does it the same so i dont know what to do . it is a 5.8l windsor engine .
nick
Hey Chris, I have a 85 se Fiero it starts up and I drive about 20 miles or more then when i try to start it cranks but won’t run until it cools down . What you think?
so what happens if you have lets say 15ohms injectors and replace them all with 12ohm ones?. Would the engine still run?.
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.
Chris all y injectors read 0.0 but the truck runs great. And also the fuel pressure is a few psi of what it should be. I’m stumped. I’m not a mechanic just a UA-cam search guy.
My car Toyota yaris 2013 model.... Has a lot of engine vibration and its injector number one not working, I've called an electrician to run the test. The electrician says there wire supplying injector number one is not having power... So we tried to remove the whole wire and see mybe if the rat had bitten the wire, nothing the wire is fine..... So can you advise me on what else can I check out for troubleshooting........ However the car is drives but I'm not happy with the engine vibration
I have a 1992 Ford Bronco 5.8l. I have an injector that is constantly feeding and when you shut the truck off it keeps firing. Any thoughts?
Sir can i connect the negative directly to the ground. And is it possible it will run even one or injection is not working
I have a 2003 Dodge Ram 1500 4.7 engine turns on but struggles to take off sometime will turn off at a stop or running turns right back on but same thing lags very badly
3 injectors on my car are at 11-12 ohms at spec. One was miss-firing and read 18 ohms. In cylinder 3. According to that reading on that injector , is it a bad injector even at 18 ohms ?
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!
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
Thanks for fixing it Bro so we can see the numbers!
Hey man where you from?? I have a ford 4.2 that sound like a diesel with misfire and lean codes and have had 3 mechanics give it back saying they can't find the problem
I must have one with ohms off just enough that it only starts failing once it heats up.
Worst part is, I've seen it, I can touch it...but I have to remove a whole intake manifold just to access it for replacement.
I have a 2015 Dodge caravan changed the injectors and spark plugs and coils it was running fine for a few days later it starts shaking diagnosed it and I got a po305 code checked it changed the coil and spark plugs to another cylinder and got the same code po305 someone suggested testing the fuel injector the clips can't come off unless I take the injector out which I really don't wanna do that unless I really have too can i test it with the electrical plug in the injector please advise me thank you 🤙
This may seem like an obvious question, but is it safe to simply detach the battery terminals prior to running this test?
Can injectors cause lean codes? 04 Chevy Tahoe 5.3
Well crap lol the resistance of like 4 out of 6 are out of spec I guess cause they are out 0.4-0.6 ohms variance
Excellent chris ,you gave me an idea i check the ohms of all the injectors and reject the cuckoo 😅
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??
Your leads are fucked man. Did you just touch your leads together and get 5Ohms?
I have all the symptoms but no check engine light. Could it still be the injectors?
I changed all 6 of my fuel injectors and spark plugs but it’s still misfiring injectors what’s the problem someone help?!?
Check for a vacuum leak near the manifold, it could also be the gasket for the intake manifold
Great job and tell h9w to do it..that's how you explain it..thank you G.b.u
Just want to say thanks for the video. Showed me what I needed to no to test my injectors on my Jeep
All my injectors are showing 0.8 ohms, is that normal?
how do I test for an open circuit? P0202