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
Misfiring just above idle (archive)
[ Follow Ups ] [ 7-series (E23) Message Board ] [ Msg. Board FAQ ]
Posted by Charles V. Stancampiano['84 733i] on January 26, 2002 at 21:47:49:

Lately I have noticed the engine in my '84 733i (US version with 157k miles) is sounding like a motorboat just above idle (1300rpm). Above or below is fine. Sounds like one cylinder is not running, but just at that speed. It is much worse when the engine is cold than when it is warmed up. Car starts well and idles OK with a little hunting.

Recent work: exhaust system, throttle cable, brakes, clutch master and slave cylinders.

Possible suspects: O2 sensor is old. Plug wires...

Other strangeness: Removing the oil filler cap or dipstick does not cause the idle speed to change although I distinctly remember both these actions causing the idle to go crazy when the car was new.

I am tempted to replace ignition stuff first. Any ideas?
Thanks.
Charlie

Follow Ups:


[ Follow Ups ] [ 7-series (E23) 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.