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-   -   1981 3.0L engine noise (http://forums.pelicanparts.com/porsche-911-technical-forum/889904-1981-3-0l-engine-noise.html)

gregguillaume 11-04-2015 08:26 PM
1981 3.0L engine noise
 
The attached video (assuming I am successful in attaching it) is my 1981 3.0L SC. It has about 102K miles. The noise I am trying ti diagnose is the whine you hear. It is not bad alternator bearings--the same noise is present even when the alternator/fan belt is removed.

The compression test was very good--157 lbs average and less than 7 % variation among cylinders.

The idle is uneven because the engine was not warmed up, and i have some vacuum leaks to deal with.

Any ideas??

Thanks in advance.

https://youtu.be/LlJExnkzUbU


Greg


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