5.0 Truck Help

MustangPunk302

Founding Member
Sep 11, 2002
1,051
0
36
West Michigan
I've gotta '92 5.0L f-150 and it's doing something VERY strange... When I move the distributor like you would when you set the timing/advance, the engine is off, and the key on, it will at a certain spot trigger the fuel pump to prime... Which to me is very abnormal, I wiggled the wires and checked for wiring faults in the harnesses, to see if I could get it to do it that way, no luck, only happens when I rotate the distributor. Any help would be great, Thanks
 
the pick-up is probably goosing the electronics to pulse the pump. Jrichker, et al will know for sure - this is just my guess.