vacuum test gauge bleeding down q?
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Joined: Dec 2000
Posts: 476
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From: sacramento,ca. usa
Car: 89 iroc,2012 eco 150,roadglide
Engine: zz4
Transmission: t56
vacuum test gauge bleeding down q?
Everyone-
I am doing a vacuum leak test.
I have my gauge installed at the plennum.
As soon as I shut the car off, the gauge drops quick to zero.
Is it supposed to bleed down slowly like fuel pressure?
I think if it bleeds down fast I have a leak.
(I'm having idle issues)
I am doing a vacuum leak test.
I have my gauge installed at the plennum.
As soon as I shut the car off, the gauge drops quick to zero.
Is it supposed to bleed down slowly like fuel pressure?
I think if it bleeds down fast I have a leak.
(I'm having idle issues)
Joined: May 2004
Posts: 2,262
Likes: 1
From: houston
Car: 83 POS monte carlo 2015 chevy P/U
Engine: 92 5.7 tpi 5.3
Transmission: 700r4 6L60E
Axle/Gears: 2.42 too high
when you turn the motor off it no longer pulls a vacuum. the gage will drop to zero almost instantly.
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