Bad Fuel Injectors? - Causes, Symptoms, & EASY Fixes!
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- Опубликовано: 8 июл 2024
- Fuel injectors are the unsung heroes of modern engines, ensuring precise fuel delivery for optimal combustion. In today’s video, Zach explores the inner workings of fuel injectors, common symptoms of failure, underlying causes, and effective fixes to keep your engine running smoothly. Regardless of automotive skill level, this video equips you with the knowledge to diagnose and address fuel injector issues, preserving your engine's efficiency and performance.
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00:14 - Bad Fuel Injectors Intro
00:58 - Common Causes of Failing Fuel Injectors
01:57 - Signs & Symptoms of Bad Fuel Injectors
02:22 - Common Fault Codes for Failing Fuel Injectors
02:47 - How Severe Are Bad Fuel Injectors For An Engine?
04:18 - How to Diagnose Bad Fuel Injectors
05:06 - How to Test For Bad Fuel Injectors
07:39 - Causes, Symptoms, & Fixes for Bad Fuel Injectors Summary 
Авто/Мото
Thank you so much for this video. Wow you don’t know how much this helped. Thank you very much. Continue what you’re doing. 🙏
K - Thanks for the feedback! We're glad it helps.
Thank you for not doing bs ai voiceover garbage :)
I have an Excursion over 320k miles on it with the original fuel injectors. What’s the recommendation to changing these as part of regular maintenance?
L - 320k is way past, but they aren't cheap, so might be worth cleaning them at some point.
I have endeavored to change my fuel injectors in my 2000 Corolla. It has been a wild ride with the injectors leaking due to the injector o-rings tearing or getting chewed up. Thankfully, I have a lot of spares and I have gotten better at inserting and lubricating them. I finally managed to get the injectors to stop leaking but then I was hit with numerous low-300 misfire codes plus P0172 (running too rich).
I read up on the misfires and the lower seals needed to be lubricated so I used Vaseline. No more 300 codes but I still have P0172. LTFT goes down to -26%, which is quite ironic considering I've been dealing with P0171 for the longest time. The car idles softly like it may sputter out when I drive slowly or stop
I assume this rich condition is from all of the excess fuel that went into the cylinders/engine from dealing with the recurring leaks and lifting the rail up and back so much and gas going into the port holes. It's not like it was a water hose or anything but still a decent amount over time as I couldn't run the engine with the injectors leaking.
Will this rich fuel condition work itself out with the engine drying on its own the more I drive or what can I do?
M - We have a video on P0171 that may be useful for this: ruclips.net/video/U3JVc3VLahA/видео.html
@@8020Media Thank you for the link. It turned out to be the fuel injectors. The reason I was getting P0172 was that the new injectors, which were bought on eBay, were apparently not flow matched. I was told to put the originals back in so I used a rebuild kit and cleaned the insides with MAF sensor cleaner after removing the old basket filters. I had numerous misfire codes after doing this but after disconnecting and reconnecting the battery the codes disappeared and I could see that LTFT now only goes up to 19.5%. This may seem like a lot but it was reaching up to 39% prior with P0171 always coming on.
I was able to green light the various systems and get it smogged today. For THREE years I dealt with this perpetual code coming on and I couldn't figure out the culprit. I had changed the fuel cap, PCV valve, MAF sensor, 02 sensor, ECU, checked for vacuum leaks, and redid the manifold intake gasket all to no avail.
R - Awesome. Glad you got it all figured out! Thanks for sharing your experience. This will certainly help future viewers.
Thank so much for this information. I have a question for you. Can an accident to the passenger front end cause damage to any of the fuel injectors?
KC - Kind of depends on how bad the accident was and was it fixed?
@@8020Media my car was fixed but now I smell gas when I start the car. Here's how the accident happened... I was on a residential street turning right into a driveway. Then a car hits me on the right because the driver tried to pass me on the right as I was making a right into the driveway at about 5 mph. And the other driver was probably going 40 mph. Nuts huh! Good thing for dash cam ^.^
KC - Glad to hear you're okay! Yes, always great to have a dashcam. Don't think this is a fuel injector issue. What other symptoms are you experiencing?
14 maxima here, I hit a deer on my passenger side. I would check everything around the radiator and everything around your AC compressor along with your AC lines. I had a cracked radiator hose and a crack near the radiator cap along with a slight crack in the high side hose of the AC…and didn’t discover any of it until months after the car was “fixed”.
Your fuel injectors should be the least of your concerns lol
M - Thanks for taking the time to share your insights!
Hello, and thank you for the informative video. I'm hoping you can give me some insight into a problem I am having with my 2015 ford flex limited. For the last couple of months my flex has developed a stutter between 25 to 45 miles mph. I can see the tach jumping during this stutter. The problem is I am getting zero fault codes. I assumed maybe clogged or bad injector. I have run several tanks of premium fuel and added techron fuel system cleaner to it as well. No changes at all. Am I incorrect in my assumption or is it still a possible injector problem and how would I diagnose which injector. At idle no miss is detectable. Thanks for any help that you can provide.
J - We think these videos could be helpful in your research: ruclips.net/video/cua6aG2ld9E/видео.html
ruclips.net/video/l6q5Tfe5g0w/видео.html
😮
K - We think this is a good thing?
he forgot to mention a bad ecm
Chris - Thanks for adding this insight.