05-15-2011, 07:43 AM
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Seek to understand,^Value
Location: San Jose, California
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Join Date: Mar 2008
Posts: 17,118
Mein Auto: 02 BMW 525i M54 automatic
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In this thread today:
- E39 (1997 - 2003) > Engine code po171
Paul kindly showed how he fixed his M54 rough idle with Permatex around the DISA valve o-ring.
- **Rough Idle**p0174 and p0171**Vacuum Leak**ALL FIXED
It's likely he was unaware of the DISA o-ring source at the time of his rough-idle P074 P071 DIY ... so I ask this question (of him) and of the tribe in general.
QUESTION: Knowing that the source exists for the M54 DISA o-ring, if you had a leak, would you 'still' use Permatex or would you simply replace the o-ring unlubricated?
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