wont fire

1994 HOLDEN COMMODORE
360,000 MILES • 6 CYL • 2WD • AUTOMATIC
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HAZZA65
  • MEMBER
  • 2 POSTS
my car has a spark comming from the starter motor will this prevent it from starting because it turns over but wont fire
Feb 13, 2011 at 4:41 AM
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RASMATAZ
  • CAR REPAIR CONTRIBUTOR
  • 75,992 POSTS
If the starter motor is cranking the engine over and it will not start-do below

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 so, 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
Feb 13, 2011 at 5:05 AM
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MHPAUTOS
  • CAR REPAIR CONTRIBUTOR
  • 31,937 POSTS
Have the starter checked out as the short may create a voltage spike problem that can do other serious electrical damage, do the starter and re post the results.

mark (mhpautos)
Feb 14, 2011 at 8:47 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.