cel help

[burtonrider]

hey guys my car threw out p0171 fuel trim lean bank one and i was trying to trouble shoot it without being near the car cause its in nh. so i had my buddy take a look at it for me and he says its throwing p0171 and p0303 miss fire cylinder 3 so now im starting to think its a partialy clogged injector on cylinder 3 can any one help has this happened to anyone?

 

[Pedro]

bad spark plugs will give you that code as well. how many miles on the plugs?

 

[burtonrider]

about 8000 but wouldnt i wouldnt be getting the p0171 if it was a bad plug would i

 

[Pedro]

bad O2 will send codes like that too.

 

[Ryan]

I would check the coil packs as well.

 

[inski]

One time at band camp I had a customer with a p0171 fuel trim lean bank one. WRX. I tracked it down to the shorty intake it had on it. The MAF numbers were out of spec, low grams/sec. It was NOT getting enough air. I put a stock air box on it and new panel filter and the numbers jumped to a much better level. The stock box was flowing better than the aftermarket intake.

 

[burtonrider]

well ran some sea foam through it and no code yet hopfully it was just a clogged injector

 

[TheNailman]

yea, your plugs should be fine still with only 8k on them. i would still like to try seafoam sometime. which hose did you pour it in?