1999 Mercedes Benz ML320 starting

1999 MERCEDES BENZ ML320
136,000 MILES • 6 CYL • 4WD • AUTOMATIC
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POLO1CLUB
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  • 1 POST
takes couple of tries to start already chang[img:dd2f152bb7]http://www.2carpros.com/forum/automotive_pictures/583496_MB4_1.jpg[/img:dd2f152bb7]ed crank sensor
Oct 16, 2010 at 12:45 AM
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RASMATAZ
  • CAR REPAIR CONTRIBUTOR
  • 75,992 POSTS
Cranks but no start condition-do below to determine whether it's a fuel or spark issue:

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.
Oct 16, 2010 at 1:23 AM
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