So today I changed my oil, fuel filter, and pressure washed the underside of the truck. The truck idled fine for 10min while I power washed it. i shut it off for a couple of hours and then got in it to go to the store. It started right up and drove to the end of the street then died. I cranked it and it would ocasionally fire and run for a few seconds at like 400rpms then die. If I hold the go pedal to the floor it will run roughly at 400rpms for like 20seconds. I opened the bleeder on top of the filter and it fuel ran out with the key on and the pump priming. PMD was replaced 5k mi ago

Any suggestions??? I am leaving for vacation for 2 days tomarrow morning and am taking my truck.

:help:

Ouch! Of course better now, than mid vacation.

No water in fuel light?
You don't have any fuel leaking around the filter do you?
Did you have any junk in the filter bowl when you changed the filter? Wonder if some went down the line into the top of the IP where the little screen is at?

Just shootin' in the dark with ideas here....

Opening the air bleed with the key on tests the lift pump. Open the air bleed at idle to test the OPS.

Opening the air bleed with the key on tests the lift pump. Open the air bleed at idle to test the OPS.

QM, I'm confused by your answer. If the lift pump will run with just the key on, then what is the purpose of the OPS?

Sincerely,

Rob :)

drained water from system before changing the filter. It looked clean and the water in fuel light wasnt on. I will try the debris thing. the truck is not throwing any codes and worked fine for 70 miles today. Any other ideas??:help2: :help: :help2:

I think the glow circuit runs the lift pump until the ops takes over except the ops doesn't run the lift pump on a '98 so the idle test wouldn't apply in this case.

I'm wondering if the pressure washing blew water into circuitry but I dunno, grasping a bit here mostly.

Another thought...I notice on my truck, and have read other posts to this affect, that the output side of the line pump (where the line attaches) seems to rust. I'm wondering if this is the case on your truck and the high pressure was blew a little hole thru a rusted part of the fuel line...in which case you'd be sucking air into the fuel line....dunno, just thinking out loud.

The truck is from AZ and has Zero signs of rust anywhere (even exhaust) i pulled the fuel filter back out and cleaned the bowl real well with Q-Tips to remove all of the crud inside. Put everything back together and bled the air out. Still nothing. Any other ideas?? Getting desperate.

Oh yeah the truck sat for a couple of hours after the washing so it had plenty of time to dry out. It also fired right up and drove about 1/4 mile before dying.

Is there like a fuel shut-off switch or some type of a fuse to look for?? I figure that ill go back to the basics.

Thanks!!

-Brent

Opening the air bleed with the key on tests the lift pump. Open the air bleed at idle to test the OPS.

The truck wont run long enough to idle.

When you open the air bleed and turn the key to on, without cranking, do you get a lot of fuel out of the air bleeder?

During the wait to start period, you should hear the lift pump "purring" on the frame rail under neath. No purring, the engine might not either. After wait to start period, the OPS will take over. The lift pump is not powered by the glow circuit, but controlled at the same time by the ECM.

When you open the air bleed and turn the key to on, without cranking, do you get a lot of fuel out of the air bleeder?

Yes there is quite a bit of fuel that comes out

During the wait to start period, you should hear the lift pump "purring" on the frame rail under neath. No purring, the engine might not either. After wait to start period, the OPS will take over. The lift pump is not powered by the glow circuit, but controlled at the same time by the ECM.

The lift pump "purrs" like normal and spurts fuel out of the Air Bleed Valve.

I figured it out. It was the fuel shutoff solonoid mounted on the Injection Pump. Dealer wanted $225. I bought one from SSDieselSupply.com for $97. IT should be here in the next day or two. Thanks for all of your help!!

-Brent

Thanks for reporting back and sharing the fix with us :ro)