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[BiodieselPlace]

Originally Posted by phlorit

First, thanks 94Strokerace.. Your guidance helped a bunch. I cannot smell any burnt plastic inside the valve cover.

Next, went and got a US General fuel pressure gauge. Just a basic injector pressure tester. Had the correct schrader female end for the test.

Tested as it sat from my previous notes. The needle did not move from Zero. Thought I had something setup wrong. Truck was running rough as it was before.

Took off gauge and checked it. THere was diesel in the gauge, so it was getting fuel.

Then I, for the sake of doing it, changed out the fuel filter. New gasket of course as well. Started the truck and ran the throttle up to WOT. Now the gauge was sitting at 10PSI at idle, but after the new filter, it was running somewhat normal. Let it idle for a while and then did some WOT 5 second pulls. It was heading up to 30-40 PSI and back down to 10PSI at idle.

Took the truck out.. and ran it around and it felt back to what it was before the issue. Ran well, smooth.

Brought it back and tested the pressure again. 10PSI at idle and 30-40PSI at WOT.

Checked all harness connections and they are old, but look ok. I know this does not matter much.

So, a few thoughts...
1. Bad fuel in the front tank that clogged up a 10,000 mile filter?
2. Bad fuel pump at those pressures?
2. The pressure is still bad, but with potential junk in the filter it just could not push enough fuel?
3. Fuel filter was just bad.

I am not sure what the pressure is supposed to be, but I think it should be up around 60PSI.

I will change the oil for the heck of it and see if that improves the pressure...

Thanks in advance for review of this information....

Have you checked for fuel leaks in the valley?
I thought you mentionned are smell of diesel.
Those lift pumps are prone to fail.
10 psi at idlle is not enough. 60 psi is about right at higher RPMs.
Something wrong with fuel delivery.
Could be pump, or could be related to pressure regulator, maybe even cloged up strainer on your regulator.

Good luck.