vaccum at idle?

[boostaholic]

if ur gettin 20-22 hg's of vaccum at idle is that bad?

[87Shadow]

No now stop asking questions!
And that much vaccum means your engine SUCKS! :big grin:


Side Note: I get around 15Hgs

[boostaholic]

YO I TOLD YOU MY CAR IS THE S-L-U-T HAHAHA SO SHE GETS ALOOOOOTTT OF ......VACCUM!

[86Shelby]

At a hot, low speed idle(1000 RPM or less) a healthy engine should have 15-18 in/Hg of vacuum. That figure is for street engines, no race or Saturday Night Specials. My engine for example is very, very tired, it has 8-10 in/Hg and misfires like no one's business.

[89DodgeSpirit]

my car alternates between 15 and 20 inches of vacuum at idle =) Because I have a bad vacuum check valve that works sometimes and doesn't other times... I need to replace it!!!!