rocker cover oil leak.

UK forum for general and technical discussion about the Z3 roadster
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Peleno2
Joined: Mon 08 Jun, 2015 15:41
Posts: 7

  Z3 roadster 1.9i

rocker cover oil leak.

Post by Peleno2 »

Hi all,
I have a small leak from the rocker cover gasket,( its a 2001 1.9 sport), which after a long run leaves a few drips on the floor and some seems to find its way onto the exhaust manifold and makes the
car smell of burnt oil.
My question is, is the gasket just worn or does the rocker cover breath into a filter that may be blocked causing some back pressure to force the oil out?

Any advice would be appreciated.
Thanks Mark
Del
Joined: Sat 19 Nov, 2011 18:35
Posts: 2136

  Z3 roadster 1.9

Re: rocker cover oil leak.

Post by Del »

It's quite common for the rocker covers to develop a leak. The rubber just shrinks and hardens with age. Crankcase pressure from hot oil vapours etc would normally be "vented" via the little round plastic valve at the rear of the inlet manifold system. If blocked you would experience running problems and higher oil usage.
Cooper01
Joined: Tue 29 Apr, 2014 08:06
Posts: 163

  Z3 roadster 3.0i

Re: rocker cover oil leak.

Post by Cooper01 »

Common issue. Buy a new gasket set and install. If you haven't done it before watch a few Youtube vids. It is easy.
Peleno2
Joined: Mon 08 Jun, 2015 15:41
Posts: 7

  Z3 roadster 1.9i

Re: rocker cover oil leak.

Post by Peleno2 »

Thanks guys, advice much appreciated. :)
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