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
Re: Q: Is 150-155psi acceptable compression - see (archive)
[ Follow Ups ] [ M5 (E28) Message Board ] [ Msg. Board FAQ ]
Posted by WH on March 23, 2001 at 21:36:32:

In Reply to: Q: Is 150-155psi acceptable compression - see more posted by Patrick on March 23, 2001 at 09:06:44:


I am looking to buy an e28 M5 and have had it checked by a reputable tech. He stated the compression was fine @ 150 - 155. He states that this is the specification in the BMW manual. Everything else on this board states it should be 175-185? Please clarify. Thanks in advance for your advice.

Yes those numbers seem a little low....... but if all the cylinders are within 10% it's probably OK.

Every compression gauge I've ever used varies by at least 10-20psi. So it could be the gauge, or how he tested it.... (tired battery/throttle closed?/ engine cold or hot?)

It does make a difference....

WH


Follow Ups:


[ Follow Ups ] [ M5 (E28) Message Board ] [ Msg. Board FAQ ]
Questions, comments, or problems, please visit the Roadfly help desk.
Roadfly.com Logo © 1997 - 2009 Jump Internet Inc. All rights reserved.