rocker cover oil leak.

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Peleno2
Joined: Mon 08 Jun, 2015 16:41
Posts: 7

  Z3 roadster 1.9i

rocker cover oil leak.

Post by Peleno2 » Sun 11 Jun, 2017 15:07

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: 2120

  Z3 roadster 1.9

Re: rocker cover oil leak.

Post by Del » Sun 11 Jun, 2017 23:14

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 09:06
Posts: 152

  Z3 roadster 3.0i

Re: rocker cover oil leak.

Post by Cooper01 » Mon 12 Jun, 2017 08:01

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 16:41
Posts: 7

  Z3 roadster 1.9i

Re: rocker cover oil leak.

Post by Peleno2 » Mon 12 Jun, 2017 14:43

Thanks guys, advice much appreciated. :)

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