i was running stock 19lb injectors with my combo for a while and the plugs have all been white with a little bit of red and tan on the electrode which would indicate a lean condition

i knew i needed bigger injectors and i put 24lb ford motorsport injectors on it and the plugs are still the same as before.fuel pressure is at about 48psi, the injectors have been balanced and flow tested also

does anybody think this an 02 sensor causing this, i still have the stock chip in it and assumed it would definitely run richer with the 24lb injectors but hasnot

custom chip coming along with the stealthram next week!

 

Could be O2, could be MAF, could be
vacuum leak, could be coolant leak..

Put an ALDL scanner on it and see what
the sensors are saying, or even better
put a WB O2 sensor on it and see what it's
actually putting out.

mike

 

well the MAF is stockw/screens and it definitely works better than the one i cut the fins out of cus the car actually runs with it, ive checked around for anything obvious like vacuum leaks unplugged sensors etc.... when u say coolant leak do you mean a slight headgasket problem. i do have a drip or two from those oil cooler lines though.

im gonna put a new O2 sensor in it and if that dont work. im gonna try borrowing my friends scantool and see what everything is doing