The complete automotive resource for buyers, sellers, and owners like you.
Car, Truck and SUV Forums at Roadfly
+ Bentley Forums
+ BMW Forums
+ Cadillac Forums
+ Chevrolet Forums
+ Ferrari Forums
+ Jaguar Forums
+ Lamborghini Forums
+ Lotus Forums
+ Mercedes-Benz Forums
+ Maserati Forums
+ MINI Forums
+ Porsche Forums
+ General Discussion
+ Marketplace Forums
Light pinging on my '89 535i 5 speed.............. (archive)

[ Follow Ups ] [ 5-series (E34) Message Board ] [ Msg. Board FAQ ]

Posted by Warren Gregoire on September 30, 2001 at 11:48:27:

Usually can only notice it say in 3rd around 2500-3000, climbing a very mild grade. Any increase in throttle will cause it. When RPM builds the normal engine/exhaust sound masks any pinging which may or may not be happening.

My excellent shop, Bavarian Professionals of Berkeley, CA says it is probably caused by two contributing factors-
carbon buildup in the head and deterioration of the fuel quality in CA (Now only 91, tops.).

I have searched the archives and found advice that running the engine at 4K on the highway for a couple of minutes might help clean it out. Also a cleaning type fuel additive, Lubro-Moly ventil Sauber, and a cleaning process using GM Top Engine Cleaner.

It is apparent quite a few 535i owners have had this problem.
Has anyone found a solution?

Thank you!

Warren




Follow Ups:



[ Follow Ups ] [ 5-series (E34) Message Board ] [ Msg. Board FAQ ]
Questions, comments, or problems, please visit the Roadfly help desk.
Roadfly.com Logo © 1997 - 2017 Jump Internet Inc. All rights reserved.