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Because the problem exists both when the engine is cold and hot (when you don't need the GP's) i am thinking it's the IP. I come out this morning and saw two drip spots on the floor between the converter cover and oil pan....i need to check the valley pan when I get home for fuel. I think it's...

Still working on this truck and having a hard time finding the source of the very hard starting. Everything is new, GP's, new card, new batteries,new cables,GP relay, starter relay and new spin on fuel filter with new fuel lines to the IP. New fuel filter has very good pressure a fuel lines have...

...got it the 20 amp engine control fuse was blown, now with key in the start position I have 12v to one of the purple wires and nothing on the other so that must be the 24v switched wire. Thanks, David

Doghead relay...2 purple wires? ...now hard starting Doing the starter relay mod as I've done many times but this time no purple/white stripe wire to tell the 12v with the on. I tried to test both wires but neither one reads 12v with the key on. I did cut the wire harness apart to try and fine...