Misfire

1995 FORD F-250
347,709 MILES • 7.8L • V8 • 2WD • AUTOMATIC
Avatar
MATT STONE
  • MEMBER
  • 1 POST
Have a misfire and cannot locate the problem and need help if anyone can.
I have not hooked computer up to it because it’s the old obd1 system and only have the obd2 computer.

I have changed distributor cap and re-timed the distributor, changed all spark plug gap at 40, changed plug wires, map sensor, changed oil (doesn’t affect this) and going to change fuel filter in morning, but have a feeling this is not related to issue. Could I have a bad coolant temperature sensor? Bad head gasket? Bad fuel injector? Am I missing something? Please help don’t want to keep pouring money into it to find the issue by changing parts blindly. No leaks or weird noises (besides missing or small back fire).
Thanks for help.
Aug 30, 2019 at 9:55 PM
Advertisement
Avatar
SCGRANTURISMO
  • CERTIFIED EXPERT
  • 4,897 POSTS
Hello,

In the diagrams down below I have included the factory guides for timing adjustment, idle adjustment and a guide for retrieving the Direct Trouble Codes (DTC)(s) from your vehicle without having to use a code reader. Please go through these guides and get back to us with the DTC(s) that you get and we can go from there.

Thanks,
Alex
2CarPros
Aug 31, 2019 at 7:35 PM