Yes, search 50 cent mod or P1316, basically just ohm between center of the 9 pin connector and the 3rd & 4th pin and the 6th and 7th pin. The 2 front and 2 rear of the plug are for the GP's and you would need to check those against battery ground.

 

I have found the issue! I am setting my truck up to run veggie oil, and apparently one of the check valves that I installed on the passenger fuel head a while ago went bad, and was letting air into the system. It is now off, and there are no cranking issues.

Thanks for all your help Alan. Reps sent.

 

Glad you found it, didn't see that coming...but didn't know they were there either.

 

Yeah, I completely forgot about them until I had a fuel pump show up on my door yesterday. Thanks again for the help, maybe next time I won't be a dunce and will remember the last modification and start there!

 

Nah, you're fine, so how is there any performance that you have noticed now, I realize you had cranking issues, and some romps, but I wonder what else was being affected.

 

I actually didn't notice any issues with performance. And I can't for the life of me figure out exactly what was wrong. Since the cranking issue seemed to become worse after driving for a while...