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Perhaps. It doesn't look like it has been opened up. I was going to open it and see what it looks like in there after I get the fuel tanks all back together

The tanks are empty clean and dry right now. I was able to pressure wash them out the rear one is plastic and I got my arm in there and was able to wipe it dry. The other tank is steel I thought it was toast but it cleaned up nice. I lifted the front of the truck up about 50 inches so as I...

Fuel was bad I'd say extremely old smells like varnish. And it was brown. The tank was full of it. I sucked it all out sucked it out of the fuel filter housing. I made up some hoses and connected to were the pick up screws onto the fuel line. I than took a clean can with new fuel and run the...

Right. Ya that's good all 3 sides of it.

I did swap the pdm. Made no difference.i haven't put on clear hose off the return yet. I did have the pick up and return in a gallon jug and there was no air bubbles there. There. Were there isn't any codes I'm assuming it's something mechanical. I did see any erratic data. App sensor?

iv got a 1997 GMC 3500hd with a 6.5 turbo in it that i just picked up. the fuel that was in it was terrible. i sucked out all the bad fuel cleaned the tanks fresh fuel new fuel filter. lift pump is working. it isn't the PDM. the engine starts good. as soon as it starts engine goes to 1200 rpms...