FUEL INJECTORS

1996 Honda Accord

Tiny

zemorzemor

June, 19, 2014 AT 9:22 PM

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

FOUND 658 RELATED QUESTIONS

34 Answers

Tiny

Jacobandnickolas

June, 19, 2014 AT 9:35 PM

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.

Tiny

zemorzemor

June, 20, 2014 AT 10:25 AM

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

Tiny

Jacobandnickolas

June, 20, 2014 AT 7:44 PM

I have to be honest, I question if brake cleaner was a good choice. Did you replace o-rings?

Tiny

Jacobandnickolas

June, 20, 2014 AT 7:46 PM

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?

Tiny

zemorzemor

June, 20, 2014 AT 9:47 PM

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%

Tiny

zemorzemor

June, 20, 2014 AT 9:49 PM

Yes the problem start after I replaced the injectors

Tiny

Jacobandnickolas

June, 21, 2014 AT 7:11 PM

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?

Tiny

zemorzemor

June, 21, 2014 AT 10:26 PM

Yes on the injectors there is a number is 4008 and match with the old one so the part is the same

Tiny

Jacobandnickolas

June, 22, 2014 AT 8:38 PM

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?

Tiny

zemorzemor

June, 23, 2014 AT 12:04 AM

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.

Please login or register to post a reply.

Fuel Injector Replacement Ford 5.4L V8
Spark Plug Replacement Mercedes Benz ML500
Spark Plug Replacement Ford Explorer 4.6L V8