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1996 Honda Accord fuel injectors

Tiny
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  • 1996 HONDA ACCORD
  • 2.2L
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 239,000 MILES
Yesterday I replaced fuel injectors I got some from junk yard I cleaned them with brake cleaner. Today the check engine light is on SYSTEM TOO LEAN p0171. What is the best spay can that I can use to clean the injectors? Or what is the best method to clean them when they are out of the engine
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Thursday, June 19th, 2014 AT 9:22 PM

34 Replies

Tiny
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I hope brake cleaner didn't damage anything. I would have recommended carb cleaner. As far as a lean mixture, if the fuel pressure is within the manufacturer's specs, check for engine vacuum leaks unless you have a check engine light on that indicates an issue with the O2 sensors.
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Thursday, June 19th, 2014 AT 9:35 PM
Tiny
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I have a check engine light it says BANK 1 TOO LEAN the car is a 4 cylinder. Does brake cleaner damages injectors?

I checked the fuel pressure it s in spec and the regulator is good the pressure goes up when I unhook the vacuum line goes to the fuel regulator

there is no vacuum leaks neither
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Friday, June 20th, 2014 AT 10:25 AM
Tiny
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I have to be honest, I question if brake cleaner was a good choice. Did you replace o-rings?
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Friday, June 20th, 2014 AT 7:44 PM
Tiny
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After thought.

Did you replace the injectors with the exact same type of injector? Same part number? Could they be a lower CFM and creating a lean mixture? Did this problem just start with the replacement injectors?
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Friday, June 20th, 2014 AT 7:46 PM
Tiny
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I think brake cleaner is safe because it does not hurt rubber brake components
I took the used injectors from a 97 Honda accord.
The computer is adding 25% gas. Long fuel trim is 25% and short term is about 10%
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Friday, June 20th, 2014 AT 9:47 PM
Tiny
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Yes the problem start after I replaced the injectors
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Friday, June 20th, 2014 AT 9:49 PM
Tiny
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I looked at part numbers between a 97 and 96. They were the same. Since the problem started since you replaced them, I really feel the issue is either a vacuum leak that you are missing or the injectors are different. Is there any way you could check the part numbers and compare?
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Saturday, June 21st, 2014 AT 7:11 PM
Tiny
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Yes on the injectors there is a number is 4008 and match with the old one so the part is the same
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Saturday, June 21st, 2014 AT 10:26 PM
Tiny
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That's good. Did you replace the o-rings on the injectors when you replaced them? Also, when you checked for vacuum leaks, how did you go about it?
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Sunday, June 22nd, 2014 AT 8:38 PM
Tiny
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The injector at the rail end has a o ring. However at the intake manifold end the injector has not a o ring. There is a ring seal goes in the hole of the intake manifold where the injector goes. I did not replace the o rings or the ring seal I checked for vacuum leak using car cleaner I sprayed on the intake no vacuum leak.
Today I tried again to clean the injector I used fuel injector cleaner the chevron brand it was not a success it went worse the computer is adding now 45% short fuel trim and the engine is misfiring rough idle.
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Monday, June 23rd, 2014 AT 12:04 AM
Tiny
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Did you remove the injectors again? You know, this almost sounds like a coolant temp sensor issue, but since it started when you replaced the injectors, that leads me away from that possibility. The computer is trying to keep up with the lean mixture. Thus the readings you are getting. Is the car blowing any black smoke? I know you hate hearing me say it, but I still think there is a leak. Something is allowing added air into the engine. Unless an O2 sensor is bad, but that leads me back to the idea that is just started this.

Okay, I have avoided asking but feel I have to. Why did you replace the injectors: What was the car doing?
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Monday, June 23rd, 2014 AT 7:49 PM
Tiny
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The car does not blow black smoke when I start the engine it sounds like popping sound and some times it catch and run good for a second or so.
I removed the injectors for the first time to just cleaning them I used carb cleaner after that the injectors stopped spraying fuel. I hooked up to the injectors a syringe at one end and at the other end I hooked up the carb cleaner can there are a lot of video on youtube just enter
"how to clean fuel injectors at home" when I hook up a scanner to the car you will see long fuel trim is at 45%
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Monday, June 23rd, 2014 AT 9:37 PM
Tiny
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They all stopped working? Are you getting power to them?
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Tuesday, June 24th, 2014 AT 7:23 PM
Tiny
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Yes they have power to them. They spay gasoline but I think its not enough. They are from the junk yard
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Tuesday, June 24th, 2014 AT 10:32 PM
Tiny
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It's odd that all wouldn't spray enough. However, with used parts, one can never tell.
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Wednesday, June 25th, 2014 AT 1:35 PM
Tiny
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By the way thank you for answering my questions and helping me.
When the injectors are off the engine with what chemical we can clean them. I hear paint thinner works is it true?
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Wednesday, June 25th, 2014 AT 9:31 PM
Tiny
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I wouldn't use that. Go to the parts store and get a quality injector cleaner. That way we know it's safe.
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Thursday, June 26th, 2014 AT 7:07 PM
Tiny
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I heard that the cleaners in cans are the best like OTC cleaner?
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Thursday, June 26th, 2014 AT 9:29 PM
Tiny
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I agree.
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Friday, June 27th, 2014 AT 8:08 PM
Tiny
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Ok I put 4 new injectors. I reset the ECM I drove the car few miles. At idle the short fuel trim is around 4% when I rise the RPM 2500 the short fuel trim goes negative 12%. The long fuel trim is at negative 1.56%. Like I said I did not drive the car a lot. Is these numbers good?
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Sunday, June 29th, 2014 AT 3:06 PM

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