1991 Mitsubishi Truck will not startwhen cold

Tiny
TALMADGE WARD
  • MEMBER
  • 1991 MITSUBISHI TRUCK
  • 4 CYL
  • 2WD
  • MANUAL
  • 114,800 MILES
1991 mighty max when cold will not start I have tried all of the normal things like computor repair, sensors, idle componts. When temp is aboue 50 starts ok? Tks
Thursday, December 3rd, 2009 AT 7:05 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Do below to determine if its fuel or spark related something has to give here Hot or Cold

Disconnect a sparkplug wire or 2 and ground it to the engine -have helper crank engine over-do you have a snapping blue spark? If so-you have a fuel related problem, 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, ECM, Ignitor camshaft and crankshaft sensors- Note: If it doesn't apply disregard it
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Friday, December 4th, 2009 AT 6:22 AM

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