lynnboy021

try this first...start by testing the fuel pressure with the key on as well as the leak down once you turn the key off. I suspect a fuel pressure regulator failure, dumping fuel into the lower intake, causing a rich condition. The fuel pressure test port is located at the back of the intake manifold towards the driver's side. Remove the cap and install a fuel pressure gauge. Turn the key on and record the pressure (should be 55-60psi). Turn the key off and monitor the pressure. You should see a 2-5 psi drop once the pump is turned off (i.e. key off), but it should not drop too much further. If it drops to zero, you have a leak somewhere in the system. <!-- / message --><!-- sig -->

chevyman1981

ty you i will check all tha out i will keep you informed on wht i figure out

lynnboy021

sounds good let us know

cyberrkatz

If it were me I would see if my throttle body is the cause. If its dumping to much gas and the cylinders can't burn it fast enough to keep up. ie check the obvious fuel pressure and regulator.

chevyman1981

update i checked everthing to do with fule to me it ouds like its out of time.now how in the hell do you get the distributor bolt lose i mean how do you get to it or can some one tell me anouther directionto go in? it runs rough as $hit but has power im stumped still

95blazer4.3

I have the same suv and the same exact problem bro, and it sucks bad. It really started after i dousched my egr valve out and also the throttle body. Also I can't check the codes out because my cig lighter doesn't work. Any suggestions on how I could fix the lighter and an estimated cost?

chevyman1981

what have you tryed to fix the cig lighter if it was me i would buy a new one at advanceauto if that dont work cheek the fuse and if no go ther see if you have power to the wires