2002 Chevy Trailblazer Won't Start

2002 CHEVROLET TRAILBLAZER
12,500 MILES • 6 CYL • 2WD • AUTOMATIC
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MCHELL
  • MEMBER
  • 4 POSTS
Engine won't start. Can remove battery cables and reconnect and it will try to fire, but won't start. Thinking it could be the ignition switch, but don't have wiring digram or schematics. can you help?
Sep 17, 2008 at 10:50 PM
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RASMATAZ
  • CAR REPAIR CONTRIBUTOR
  • 75,992 POSTS
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 problem, check the fuel pressure to rule out the 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,distributor pick-up coil, ignition control module, cam and crank sensors-

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
Sep 17, 2008 at 11:06 PM
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