The New And Improved Unofficial R65 Forum V2

Technical Discussion => BMW Technical Q&A, Primarily R65 => Topic started by: jg928s4 on June 01, 2012, 12:25:06 AM

Title: exhaust leak Valve cover
Post by: jg928s4 on June 01, 2012, 12:25:06 AM

Seems I see exhaust leeking out of the valve cover.  Ideas?

Title: Re: exhaust leak Valve cover
Post by: montmil on June 01, 2012, 07:45:19 AM

More details, please.

Smoke? oil drips? Confirm exact location, if possible.

Title: Re: exhaust leak Valve cover
Post by: Bob_Roller on June 01, 2012, 07:53:40 AM

Most lilely a leaky valve cover gasket and what you are seeing is the atomized oil that is usually in the crankcase air while the engine is running .

With both pistons on the downstroke, the crankcase pressure gets pretty high .

Forget to put the oil level dipstick back in, or forget to tighten it up, you'll see how much pressure is in the crankcase, when you start the engine .