1992 mighty max getting too much fuel?

[Merrill]

Chances are the MPFI relay is messed up (passenger kick panel). Check the grounds under there as well. There are 2.

If the truck has been sitting, it probably has shit fuel in it, and changing spark plugs is only 25% of the ignition. The rest has been sitting just as long, and is just as worn/old. Do a full tune-up, replace the fuel filter, PCV valve, clean the TB and IM, use a fuel system cleaner, and put some fresh gas in it. You can't do a small portion of the job and expect 100%.

[slip]

Chances are the MPFI relay is messed up (passenger kick panel). Check the grounds under there as well. There are 2.

If the truck has been sitting, it probably has shit fuel in it, and changing spark plugs is only 25% of the ignition. The rest has been sitting just as long, and is just as worn/old. Do a full tune-up, replace the fuel filter, PCV valve, clean the TB and IM, use a fuel system cleaner, and put some fresh gas in it. You can't do a small portion of the job and expect 100%.

I have changed the gas, the spark plugs, the fuel rail and the regulator, set the timing, I dropped the tank today and checked if the pump was hot wired, it wasn't from what I could tell and the return from the fuel rail was clogged I unclogged it and started it after I hooked everything back up. still does the same thing, im going to check the grounds on the relay tomorrow and if they are good im going to replace the computer, relay, o2 sensor and hope it works, and what is the IM?