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How much Vacuum at Idle?

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Old 12-10-2004, 08:07 PM
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How much Vacuum at Idle?
Just wondering how much vacuum you guys are seeing at Idle. I think mine might be off a little, meaning I could have a vacuum leak.

I know that temperature and elevation play a role, but this should still give me a good indication.

I am in the midwest and I am seeing 15" of vacuum at idle.

What does that tell me?
 
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Old 12-10-2004, 08:41 PM
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I see about 16" at idle when warm in park and I am at 4100 ft altitude. When I drove to Dallas, I was seeing 21" at idle but they are near sea level.
 
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Old 12-10-2004, 08:46 PM
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21-22" at sea level.
 
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Old 12-10-2004, 09:10 PM
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Originally posted by Tim Skelton
21-22" at sea level.
I am at about 1500'. Does anyone think I could possibly have a vacuum leak or should I not be concerned?
 
Last edited by ben_g99; 12-10-2004 at 09:13 PM.
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Old 12-10-2004, 10:49 PM
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22 at sea level
 
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Old 12-11-2004, 12:22 AM
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Cool
HI!... I'm seeing 25-26 in/vac at idle. I'm about 600FT above sea level.
 
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Old 12-11-2004, 10:40 AM
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Damn - I've got a leak or something. I am at sealevel and I'm seeing -14
-c
 
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Old 12-11-2004, 02:23 PM
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I'm seeing 13-14lbs vacuum at roughly 300 ft above sea level with a JDM built motor w/ cams.
 
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Old 12-11-2004, 02:51 PM
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16-18 when warmed up @600'


21-22 I only get that if I let off the gas at about 55mph and coast down a big hill.
 
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Old 12-11-2004, 07:12 PM
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i pull 20 inches and i am at sea level
 
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Old 12-12-2004, 01:33 AM
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10 - 11 inches, cams at sea level
 
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Old 12-12-2004, 12:02 PM
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17 inches at idle @ 600ft 16 with the a/c on
 
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