Cuts out won`t run

Tiny
1958FORD
  • MEMBER
  • 1991 FORD F-250
  • V8
  • 2WD
  • AUTOMATIC
  • 173,000 MILES
1991 f250 starts and runs for 20 minutes then stops and will not start again for 1hour then will restart and run for 10 minutes
Wednesday, August 17th, 2011 AT 4:21 AM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Next time it refuses to start don't wait for it to make up its mind-do below immediately to determine if its fuel or spark problem

https://www.2carpros.com/articles/car-cranks-but-wont-start

Get a helper disconnect a sparkplug wire or 2 and ground it to the engine atleast 3/16 away from ground-have helper crank engine over-do you have a snapping blue spark? If so-you have a fuel related problem, Do you hear the fuel pump come On when you turn key on? If not check fuel pump fuse and fuel pump relay if okay-check the fuel pressure to rule out the fuel filter/fuel pump/pressure regulator and listen to the injector/s are they pulsing or hook up a noid light. No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/coil packs,coil's resistances,cap and rotor,distributor pick-up coil, ignition control module, cam and crank sensors and computer Note: If it doesn't apply disregard it and keep testing
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Wednesday, August 17th, 2011 AT 10:43 AM

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