1999 Mercedes Benz C280 Engine Cranks Won,t Start

1999 MERCEDES BENZ C280
80,000 MILES • 6 CYL • 2WD • AUTOMATIC
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TFRANKLYN
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  • 1 POST
The dash looks normal when the key is inserted and turned..
The engine cranks just fine, won't start..
Turn key off and try to restart maybe six times, then it starts and runs just fine..
Has happened maybe three or four times..
Apr 6, 2010 at 10:25 PM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Did you have a check engine light come on or has flashed prior to this problem and when was your last tune-up?

Cranks but no start condition:

Fuel and Spark:
Get a helper disconnect a sparkplug wire or 2 and ground it to the engine at least 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.
Apr 6, 2010 at 10:43 PM
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