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2000 GTP Quit, Need help!

FoSHO99

FoSHO99

youtu.be/xhrBDcQq2DM
Well a buddy of ours' GTP quit while going over a bridge. He went to go pass someone and it just died. Coasted to the end of the bridge and wouldn't turn over. It started one more time after that and then was blowing white/black smoke and died after a few more miles.

It's a 2000 GTP with 170k miles, Intense PCM, 3.4" pulley, SLP catback exh. 3" dp, CAI, and a walbro fuel pump has been installed for a year now. After the car died, he switched back to a stock fuel pump.

The pump turns on, we hooked up a fuel pressure gauge to the rails, when cranking it will read 49/50 psi, when on the throttle 52 psi. When you stop cranking and leave the key turned forward, the pressure drops down to near 0psi. We think it might be an injector but do not know.

We hooked a scanmaster up to it and it brought up no codes. We drained the battery and left it unplugged for a while and then hooked everything back up and nothing. We unplugged the MAF sensor before and after and it did not affect anything. The crank sensor was replaced before on it, but unsure how long ago.

The car cranks but won't turn over, it seems like it is trying to start every once and a while but nothing.

Thanks for the help!
 


hows the coolant and oil? White smoke is usually water/coolant. Also it's one of my pet peeves, but cranks and turns over are the same thing, meaning the engine turns (sorry just bugs me) if 1 injector is stuck open it would flood. Disable the fuel pump, and see if you can get it to start with starting fluid
 
Fluids are fine, I call it cranking when it doesn't do anything but crank, Turning over for me means that it starts but dies right away... lol

They were working on it before I came there, so they cranked it testing fuel a ****load of times, after replacing pumps and such, killed the battery. We were thinking along the lines of an injector being open but why wouldn't it make a putter or start? And if it was an injector stuck open, it has to be flooded by now...
 
If the injector was stuck open then it would coat the plug with fuel.

I would pull the plugs to verify.

check all the fuses as well.
 
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