Hello all, I'm here hoping to find some ideas to solve my problem. For starters, my purpose is to use this truck in demolition derby, so it has its issues. The owner before me cut the exhaust at the oil pan, so I know the lack of back pressure doesn't help matters. However, it still ran and drove well when I bought it. Since then, the motor has had flooding issues and often doesn't want to run. At one point last year it was hydrolocked with several gallons of gas in the oil, but draining it and starting with fresh oil got it cranking again. After this, it did catch on fire at one point, and many components on the passenger side melted, though nothing that seems too important for my purposes. Since then, typically when cranking on it gas comes out the exhaust, and it is still mixing with the oil, but less quickly. I have replaced injectors, fuel pressure damper, throttle position sensor, spark plugs and wires, ignition coil and it's wire connector, and MAF. It was running a couple weeks ago and it seemed like I was on the right side of my issues, but now it's beginning to flood once again, with fuel dumping out the front of the throttle body and filling my vacuum lines. When cranking on it now, it tries to fire when the throttle is wide open, but doesn't fully turn over. Does it need a new fuel pump to get a fresh regulator, or is my issue likely elsewhere?

 

"with fuel dumping out the front of the throttle body " Sounds real dangerous. Year, engine?

Your injectors are squirting, perhaps continually, enough to fill the intake system such that fuel pukes out the throttle body?
They're always powered and squirt when grounded.
Maybe your engine fire damaged the ECU or wiring such that your injectors are always grounded?

 

It's a 2000 with the 4.0L OHV engine. It very well could be that the computer or wiring is shot, and this is something I've considered. A couple wires are bare, though intact. To play devil's advocate, my follow up question would be why was this occurring prior to the fire? The fire was caused in part due to fuel getting into my crankcase with the oil and coming out the exhaust, which is happening again, but in less volume. Unless my ECM failed back then, I would assume my current issue is the same as it was before.

 

I didn't realize your condition occurred before the fire.