No Fuel

[goser]

Hey all, need a little advice tonight. With the exception of almost stalling at idle earlier today, truck has been running fine until sitting for a few hours tonight. Just tried to start it, no fuel pressure! No pressure and no noise from it when key is turned, but gives out a whimper when key is turned off. Swapped F/Pump relay with fog light relay, no change. Can't find test jumper wire.

Is it safe to assume that the fuel pump is toast or is there something else I should be looking for?

Thanks,
Guy who wishes he'd replaced the fuel pump when he replaced the tank and not now, after a fill-up.

[Airjer_]

Try smaking the tank with a rubber mallet about in the center under where the pump is mounted while somebody cranks it. If it start its almost a guarantee that the pump is bad.

[MT-2500]

Originally Posted by goser

Hey all, need a little advice tonight. With the exception of almost stalling at idle earlier today, truck has been running fine until sitting for a few hours tonight. Just tried to start it, no fuel pressure! No pressure and no noise from it when key is turned, but gives out a whimper when key is turned off. Swapped F/Pump relay with fog light relay, no change. Can't find test jumper wire.

Is it safe to assume that the fuel pump is toast or is there something else I should be looking for?

Thanks,
Guy who wishes he'd replaced the fuel pump when he replaced the tank and not now, after a fill-up.

NO do not throw parts atr it untill proper testing done.
If pump does not run check for power to it and good ground.

Jumper fuel pump with a 12 volt jumper and make sure you have a good ground.

If no run then you can be safe to replace it.

[Kgal59]

"Try smaking the tank with a rubber mallet about in the center under where the pump is mounted while somebody cranks it. If it start its almost a guarantee that the pump is bad."

LOL, I just had a mechanic tell me that's a normal thing they do to check if the fuel pump is bad. The mechanic said it isn't a fool-proof test, but it's worth a shot. So, if it counts for anything, I second what this guy said. Couldn't hurt to try.

[Airjer_]

On GM's it has a ruff success rate of 75%. It makes it a lot easier to get them into the shop as well!!

Don't bother on a ford. The plastic insulation around the windings melts and literally seizes the pump to the brushes/magnets.




Sometimes it will work on dodges as well.

[goser]

Well I didn't smack it with a mallet but that would've been handy if it hadn't died in my driveway. I figured the death wimper was sufficient evidence that it was getting power, so $400 later and I'm back in business! Kinda scary heat shrinking the wire harness near the exposed fuel lines lol!

[laxman21]

Originally Posted by goser

Well I didn't smack it with a mallet but that would've been handy if it hadn't died in my driveway. I figured the death wimper was sufficient evidence that it was getting power, so $400 later and I'm back in business! Kinda scary heat shrinking the wire harness near the exposed fuel lines lol!

I had mine installed for about $500.