| Re: [GMCnet] Vacuum pump problem/question [message #203583 is a reply to message #203542] |
Wed, 03 April 2013 22:02   |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
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No, I meant that I only have one port in the booster and the vacuum pump is inline between the intake manifold and booster. That is the way GM did it when they used those pumps on small displacement engines that had low vacuum situations.
I have had it installed for about 8 years and it was a used junkyard pump when I got it. The amount of air it exhausts into the manifold is no different that the amount of air coming from the booster without the pump installed. The air source is coming from the booster not the pump.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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