Ok for those following my love of my truck.lmaoOk I put the new used wire harness on today and, nothing, nada, still has erratic miss. Reminder that it runs perfect when eng. is cold, so as the eng. heats up the miss starts.Here is the list of new parts that apply to fuel.New vulcan draw strawNew DDP 50 HP injectorsNew filters Airdog 100 17 psi at idle WOT 15 psi New Blue Chip vp44New over flow valvueBlew out return line from vp back to tankIt will have new crossover tubes in the morning with new o rings, then the inj. lines will be the only thing left stock.When you crack lines you cant tell anythingThis weekend I will pressure up the cylinders and see if I have burnt valvues. I cant find compression test gauge. So I guess this will at least tell me if I am losing air either intake or exhaust.It passed the blow by test with only 4 11/16 rise from eng. off to 2800 rpmIf you can come up with anything please post.Just dont ask what else has been replaced, it's all new now but the ait.

Richie

JL...did you find out where the crack is at... Very curious as to if it was cracked through the retutn gallery or through the injector bore in the head.. You Know i was thinking that its Odd that with that much pressure in the return that you did not have fuel leaking out around the connector tube bore..I mean that an O-ring should have give out by now and be weeping fuel.. subscribed!!! Richie

Jlwelding, I drove a long ways this past weekend and at every fillup I had a lot of pressure at the fuel tank cap.. I know you asked anyone else if they had the same thing but I hadn't noticed til this trip. Not sure why it has pressure but it does I might have to see where it is supposed to vent at.