1994 BMW 740

Tiny
QRTRUCKER1
  • MEMBER
  • 1994 BMW 740
  • V8
  • 2WD
  • AUTOMATIC
  • 20,000 MILES
After driving for a while it die's & wont start for up to 30 min.
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Tuesday, March 23rd, 2010 AT 3:59 PM

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Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Did you have a check engine light come on or has flashed prior to this problem and when was your last tune-up?

Do below to determine whether it's fuel or spark issue:

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.
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Tuesday, March 23rd, 2010 AT 4:43 PM

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