help my 86 2.9l

[bsmitty142]

runs for 30 mins drives then starts sputtering and then shuts off i let it sit for 5 mins it firs up drives then dies after another 30 mins.. its like when it gets hot it dies ive put new plugs wires fuel pump fuel filter fuel pressure pump new distributor and it still does the same thing.. any advice would be greatly appreciated..

 

[RonD]

Loosen the gas cap and see if that helps.
Could be negative pressure in the tank is preventing the fuel pump from pulling more fuel from the tank, if you have a Vented Gas cap it may be bad.

Not sure if the '86 had a vapor recovery system? an EVAP system
If so then the solenoid may be stuck open, this causes engine vacuum to pull air from the fuel tank all the time, so negative pressure.

The TFI coil and module can both be effected by heat, this is a good test sheet
http://www.therangerstation.com/tech_library/TFI_Diagnostic.html

 

[bsmitty142]

thanks for the info i greatly appreciate it. i just got my truck running so far so good drove for an hour tonight and it runs great i had to fix the ground wire that connects right beside the distributor on the backside of the motor from the heat melting off the coating . i also had to remove and by pass the fuel regulator with just some rubber fuel injector lines and 4 hose clamps total cost $5.45.. truck was nickle and diming me and i was about to junk a perfectly good truck.. hope my problems might shed some light on anyones whos having simular problems.. thanks for the help ill post back if i have anymore trouble

 

[RonD]

Good work

Thanks for posting the fixes