00gtbk

Ok my buddy has a 94 gt Its dumping the fuel and fowling the plugs in minutes it adles at 1500-2000 rpms. He has put a adjustable regulator and temp senors. Performance it has full edlebrock intake "Manifold up" and full exhaust. Anyone have any idea why its doing this?
Thanks in advanced
Also it cel comes on and off. and cant read any codes.

95Five-ohh

dumping the fuel where?

00gtbk

Like im guessing he was talking about it pulling in more fuel than needed and by that it fowls the plugs

pete88gt

what is the fuel pressure set at? 38-40psi is good on an adjustable reg, make sure he's got the vacuum line reconnected to it or it will not operate. also you need to find a way to check fuel pressure because a bad regulator w/ vac line connected will actually suck fuel up into the manifold through the vac line. bad o2 sensors can cause excessive fuel fouling plugs, it happened to me...also, a bad coolant temp sensor can tell the pcm that the car is "always cold" dumping more gas in off idle like it is supposed to because a colder car takes more fuel then a warm car. you can check resistance with a multimeter, google the resistance, you should test the sensor which is on the coolant rail, once the car is at operating temp. i would check fp first then go to temp sensor cause its cheaper than replacing o2 sensors...

00gtbk

Ok its not the vaccum line. How can I check if there's a bad o2 sensor it would throw a code right? Also it has had the egr delete

sn95_331_GT_ yellow

is the ECU tuned for that? that would cause the issue...