1993 GMC Sonoma want start

10,000 MILES • 6 CYL • 2WD • MANUAL
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WYNKOOP
  • MEMBER
  • 2 POSTS
it was runing ok then it would not start put new battery in and it was ok untill the next day would not start.I take starter off put new one on. now it just trys to start sounds like it scrubing and the battery gos down
Jan 1, 2010 at 8:12 AM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
New battery and still acting up-have the alternator checked out might not be producing the correct output voltages. If its ok and its cranking over and will not start do below


now it just trys to start sounds

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, 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,distributor pick-up coil, ignition control module, cam and crank sensors and computer Note: If it doesn't apply disregard it
Jan 1, 2010 at 8:29 AM
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