indianajim

I have a 5.0 HO that won't stay running and is stumping me.

This engine stopped running over a year ago and sat the whole time.


Recently we brought it up to top-dead-center and got everything firing fine. It was then running fine for about a week. I put gas treatment and filed it with new high octane gas. Then the motor just started running bad and eventually stopped starting completely.

I tried a new(different) computer, changed the fuel filter, and we have spark.

We checked fuel pressure from the tank (filter area) and at the engine area - Good but possibly not enough pressure?


It has spark and will momentarily start using starting fluid at the intake but that's it.

Our only thought is that it is in the fuel delivery. Any ideas to check?

Any help would be great.

Thanks,
Jim

rydinturbo

what was the fuel pressure? how do the plugs look? check for codes, vaccum leaks ect. does it just crank over

indianajim

Plugs and wires are new as is the rotor/cap.
It does just crank over.
We'll need to check fuel pressure with a gauge. We only looked for fuel movement visually.

Thanks

Duncan_GT

It sounds like fuel pressure. Although I'm not sure why it would lose pressure over a week's period

Bubba 95SN

Put gauge on fuel rail, post results.....

2011scgt

these pumps can just take a dump with no warning

indianajim

Just to let you know, no codes came up when checked. That was the real stumper as to why it isn't running.

I'll soon try the fuel pressure with a gauge.

87 T TOP GT302

Just a thought but have you checked you fuel lines?

indianajim

Finally got back to the fuel test and there is ample pressure (38lbs). Also replaced the fuel regulator with no changes.

Just a follow-up. It was running for a while and started to sputter and bog down. After parking it, it never started again.

Checked the codes and none show. Checked vacume lines - no problem.

Still completely stumped. Any ideas would be greatly appreciated.

Thanks.

indianajim

I was told by someone that it may be the fuel injectors.

Any thoughts?

Thanks