1990 Mitsubishi Truck No Start

Tiny
AXTON
  • MEMBER
  • 1990 MITSUBISHI TRUCK
  • 6 CYL
  • 4WD
  • MANUAL
  • 18,600 MILES
I recently had my ECM rebuilt. I installed it and tried to start my truck, but no go. It turns over, but is not starting. Any ideas of what I need to do next?
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Saturday, May 23rd, 2009 AT 6:09 PM

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Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Do below to determine if its fuel, spark and compression problem

Get a starting fluid/ether/better off gas in a spray bottle and spray into the carb or the throttle body on an EFI. Did it start and die? If not 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, distributor pick-up coil, ignition control module, ECM, Ignitor cam and crank sensors- Note: If it doesn't apply disregard it

If both fuel and spark is present-check the valve and ignition timing, this will lead you to problems with compression and valves opening and closing at the wrong time/broken or jumped timing belt/chain
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Saturday, May 23rd, 2009 AT 7:08 PM

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