hey i just picked up a near mint 92 v6 5spd for 900, i noticed it was running rich, once and a while if i got off the gas to turn when i hit the gas again it would just about stall, also sometime when just driving it jumps and stumbles when i hit the gas... then today i went to start and it starts for hafl a second then dies it did it about 8 time each time running a lil longer then finally started and puffed out alot of smoke. then it runs rich. i have a few ideas but want to hear from yall.

THNX

 

It sounds to me like it is dumping to much fuel into it and thus flooding it and thats why when it did final start you got the smoke because the gas was buring up out the exhaust. The exact problem I cant tell you but I would start with the fuel system.

 

SES light on? I'm guessing maybe a bad O2 sensor.

 

i know its prob in the fuel system, there is no ses light on here what i was thinking. map sensor(just replaced not it) Tps, O2 or a injector issue, im just trying to narrow it down. any help would be nice

 

what ever it is if u need parts i got the top half of a 2.8 layin around if ya need something

 

You can start off by checking the fuel pressure using a gauge on the fuel rail. Could be that the fuel press reg is not working. Make sure that the vacuum line to the press reg is connected and not leaking.

 

that sounds like a it might be a good place to look, what ever it is it does not spit up a code, which is what i cant figure out, i think it might either be the o2 or what your talkin bout, if you let it idle for a minute the hit the gas its bad too. i think im gunna go get a fuel guage. what psi should i be at?

 

TBI or TPI? For TPI it should be in the neighborhood of 40 (sorry, I don't have specs handy) and TBI should be around 11 to 13.

 

yea its a TPI would that cause it to run rich or lean if the regulator was busted

 

Indeed it would. If there's too much fuel pressure, the injectors will still pulse for the same amount of time, but there will be more fuel spraying in that time, same goes for too little pressure, less flow, too little fuel. The injectors are pretty much just valves, like a hose nozzle, and they open and close as the engines computer tells them to, they don't actually force the fuel in themselves, which is why we have pressure regulators.