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DiscoWeb Bulletin Board » Discovery - Technical Discussions » Archive through March 28, 2004 » Is there a vacuum connection on the Valve cover? « Previous Next »

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Brian Brown (Rtiqulatendisco)
Member
Username: Rtiqulatendisco

Post Number: 55
Registered: 01-2004
Posted on Thursday, March 25, 2004 - 07:07 pm:   Edit Post Delete Post Print Post

I was looking at my drivers side valve cover and noticed what appears to be a fitting where a vacuum hose should be connected. It looks a little bit like a grease zerk and is located towards the fire wall. Does any one know anything about this?

Thanks
 

Andrew Homan (Andy)
Member
Username: Andy

Post Number: 53
Registered: 01-2004
Posted on Friday, March 26, 2004 - 12:12 am:   Edit Post Delete Post Print Post

Brian on my 95 d1 there is a vacuum hose that goes from that fitting you talk about to another on the air box. this other fitting is closest to the fender and is on the top part of the air box/ or air filter housing. I think it's just another breather for the crank ventilation. I left mine of when i took the air box out to do a lift. I found that I had'nt hooked it back up until later. didn't notice any running problems though, but it is nice to have everything where it is supposed to be.

Cheers Andy
 

Sergei Rodionov (Uzbad)
Senior Member
Username: Uzbad

Post Number: 397
Registered: 08-2003
Posted on Friday, March 26, 2004 - 12:35 am:   Edit Post Delete Post Print Post

Yep. They used to have another filtering breather there, but then for some reason just changed it to suck air directly from airbox. You better off putting hoose in there, as overwise all particles from air will end up inside your driverside rockers..
 

Erik G. Burrows (Erik)
Senior Member
Username: Erik

Post Number: 318
Registered: 04-2002
Posted on Friday, March 26, 2004 - 11:49 am:   Edit Post Delete Post Print Post

Those tubes from the valve covers to the air intake are there to meet emissions requirements. Some exhaust gases escape around the valve stems (this is the same gas that causes carbon buildup), and those tubes suck it back into the engine so that it'll eventually go into the cats, rather than escape into the atmosphere.

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