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Unread 06-29-2013, 11:21 AM   #1
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Join Date: Feb 2012
Location: Marysville, Washington
Posts: 7
vacumn leak

Hi all,

I know this is probably a stupid question but I have a slight vacumn leak and I noticed on the back of the carberator on my 304 V8 is fuel residue. It seems to be coming from the rear upper gasket. Could that be what is causing the vacumn leak?

Again, you might just say...DUH! But I wanted to confirm before I take my carberator apart.


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Unread 06-30-2013, 10:28 AM   #2
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1979 CJ7 
Join Date: Dec 2003
Location: Schenectady, NY
Posts: 1,211
Yes that could be it.

spray the area wit cab cleaner and if RPM's increase, you have found your leak.

Good luck!
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Unread 06-30-2013, 05:55 PM   #3
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1985 CJ7 
Join Date: Jul 2010
Location: The Mojave Desert Palmdale Ca. U.S.A.
Posts: 4,828
Tighten all the top plate screws first.
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