Questions & Answers for: running really lean

...running lean. I think the codes are ?P0701, & P0704? What do I need to do to correct this problem. The lean condition is caused from the upper intake gaskets and isolation bolts not sealing properly ...

really bad when first strat up in morning put code scanner on it and got code 171 and 174 banks lean changed throttle position sensor per advice from friend same guy suggested maf sensor any help I've

...lean mix will run really hot and allow for secondary combustion in the pipes (backfire) when the valves let even a bit of uncombusted gas through. My guess is that the bike hasn't had the carbs ...

...running really lean and is really hard to start, and even whenever it does start i have to leave my choke wide open for it to stay running. It runs so lean that my exhaust pipe turns bright red. I ...

running lean It's really impossible to diagnose something like this. You're running lean...so? You could have a bad o2 sensor reading the exhaust stream wrong and commanding the PCM to go lean

...lean mixture at lower revs. Can you help please. Scan tool or code reader ? Are the O2 Sensors really old? Like 80,000 miles or more? Most likely rich & the computer is taking out fuel & you ...

running This really sounds like a problem with the fuel pump, a very common problem. Check the fuel pump pressure or have someone lean under the car and listen as you turn the key to the "on" position

...running it too rich. Try leaning out the high speed jet a little. That's the one closest to the air filter. Out to the left, in to the right. Out richens, in leans. Too lean = cooked piston, so be ...

...running too rich, not lean. Was it a typo, or did you really have P0172 (just like my Buick, same two codes [0300, 0172]- and still working on it). Go to the site above and look. (All codes are there ...

...running lean. plug should be tan to medium brown. lean will cause rough idle, and popping on deceleration. resolve = clean idle jet, circuit, and set mixture screw properly. A job like this should ...