integranator

iTrader: (2)

How would i know if my fuel pump is having problems??? I just recently started running lean, and I have no idea why?! I just recently replaced my o2 sensor w/ a brand new bosch one and it still hasn't changed. Someone mentioned to me that it might be my fuel pump-- I have a walbro 255

preluder

do you have bucking problems with the car not having enough problems . Is the timing on-point? check your plugs and your wires ,fuel filter may be bad . If your reading it from of the a/f ratio guage then your wrong cuase its just a light show unless you have a wideband o2 sensor. and last but not least check the fuel pump relay.

integranator

iTrader: (2)

the car doesn't buck at all, it kind of stutters every now and then around the 2.5k to 3kish area--- I haven't touched my timing, but i'll check it. Plugs are brk 7e's, wires are decently new. Haven't changed the fuel filter yet, and i've got about 67k on the car. I don't have an a/f guage for the same reason that you've said. The fuel pump is on, because I can hear the whining of it. But where is the pump relay at? Also, when I check the plugs they always look brand new, w/ some signs of lean-ness on them.