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2001 BMW 740 rough idiling

Tiny
NATBMW
  • MEMBER
  • 2001 BMW 740
Engine Performance problem
2001 BMW 740 V8

I have a 2001 740i. The car was running great then all of a sudden it started idiling rough and it was hesitant. Do you have any idea what the problem could be?
Sunday, April 26th, 2009 AT 3:34 PM

1 Reply

Tiny
DOCHAGERTY
  • MECHANIC
  • 9,601 POSTS
The problem you might be having is possibly related to the PCV plate on the back of the manifold. At some time in the life of all the M-62 motors, they require it to be replaced. When they fail they show symptoms that you report. Go to Realoem. Com and look for part# 11-61-7-501-563. The plate can be removed from the car without pulling the manifold, but be careful not to strip the heads on the T-30 Torx screws or you will be removing the entire manifold. Also replace the throttle plate profile gasket as well. Has the valley pan ever been replaced?
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Monday, April 27th, 2009 AT 7:43 AM

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