Crank Case Pressurisation
Moderator: martauto
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hennared323i
- Old Skooler
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What are the most common causes?
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SGP
- E30 Zone Regular
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- Joined: Thu Aug 31, 2006 11:00 pm
Blocked breather pipes perhaps ?
If it ain't broke..
Fix it till it is
Fix it till it is
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daimlerman
- **BANNED**
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Assuming that we are talking M20 engine,the tube that runs between the crankcase and the underside of the inlet manifold is your prime suspect,this allows crankcase pressure to be returned to the top of the engine,then it is passed via a rubber hose from the rocker cover to the throttle body,this pipe is prime suspect number two.
Do not be fooled by those from NZ who claim that the tube between the inlet and crankcase is 'just an oil drain'!
Do not be fooled by those from NZ who claim that the tube between the inlet and crankcase is 'just an oil drain'!
Youth is wasted on the young.
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hennared323i
- Old Skooler
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- Joined: Wed Jul 25, 2007 11:00 pm
Sorry, Meant to say it is an M42 - will have more info tomorrow
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HairyScreech
- Engaged to the E30 Zone
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All crank cases without a vacuum pump system will pressurise to a certain extent, however it should only be sight.
The breather between the block and head on the m20 is so large i struggle to see how it could get blocked by any normal events.
The breather between the block and head on the m20 is so large i struggle to see how it could get blocked by any normal events.
2.8 development thread http://www.e30zone.net/modules.php?name ... c&t=170822
m3.3.1 m20 thread - now running, chip needed - any volunteers?
http://www.e30zone.net/modules.php?name ... =viewtopic&
m3.3.1 m20 thread - now running, chip needed - any volunteers?
http://www.e30zone.net/modules.php?name ... =viewtopic&