VACUUM question

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Sep 22, 2008 | 10:17 PM

tha joker

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From: Napa, CA

VACUUM question

so if im sitting at idle my car is at 10in of vacuum and if i step on or even slowly roll into it my vacuum goes up to 20 or so inches.Is this normal or is there something in my pcv crossed.

Sep 23, 2008 | 12:00 AM

Monello

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I see about 16-18 =/

Sep 23, 2008 | 12:29 AM

tha joker

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From: Napa, CA

but does it go up before back down ...that's what has me concerned

Sep 23, 2008 | 12:48 AM

67Firebird455

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From: Visalia, California

If you gun it, it should go to 0, I guess you could create more vacuum just above idle if you were OFF the throttle. Shouldn't do what you're saying regardless though....

Sep 23, 2008 | 12:50 AM

black98ws6ta

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From: louisville,ky

I cant tell you if it is something wrong with your set-up or not, but I have noticed an increase in vaccum with rpm and slow throttle increase.

Sep 23, 2008 | 02:00 AM

H21surfer

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From: OKC, OK & Hatteras Island, NC

my car sits about 16-18 at idle and if I slowly give it gas it will go up to 20 or above before it starts moving in the other direction. If I go faster it will just start moving towards 0.