Re: [DMCForum] vaccum under the valve covers?
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Re: [DMCForum] vaccum under the valve covers?




checksix3 wrote:

>
>Come on Mate...I know you know better ;-)
>  
>
Indeedy - I just wasn't 100% - like maybe I was missing something (I'm 
still very much learning, just have the opportunity to learn from one of 
the best). Just posted this to the DML.

I have been thinking about this and always thought that it didn't make 
sense. There shouldn't be any vacuum in the crank case. Period. The 
engine draws air over the oil breather to vent the fumes, but this is 
prior to any metering and so any "leak" will not affect running. I was 
never certain and never got around to asking Darren, however I just 
spoke to him and he said it's more likely that if you can affect running 
by spraying solvent onto your engine, you are in fact dealing with 
intake manifod leaks.

Rocker cover, timing cover leaks are not open to the metered air 
intake.... the only bits that are, are intake manifold, and the injector 
seals are another possible problem






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