Mazda3 Forums banner
1 - 4 of 4 Posts

·
Registered
Joined
·
65 Posts
Discussion Starter · #1 ·
I am getting around -11 in of Hg at idle. I saw somewhere else that it should be around -20. This would indicate a vacuum leak. Any thoughts?
 

·
Registered
Joined
·
1,088 Posts
should be between 17-21 mmHg... I would look for a vacuum leak and make sure your gauge is connected right, not saying it's not but sometimes... use a can of brakleen, or wd-40 or something like that to spray down connections before the throttle body and also the intake mani gasket, and associated top end gaskets. if it stumbles where you spray it around a connection or what have you then there's a vacuum leak in that area...
 

·
Registered
Joined
·
22 Posts
[quote author=florindi link=topic=136797.msg2948831#msg2948831 date=1235096668]
I am getting around -11 in of Hg at idle. I saw somewhere else that it should be around -20. This would indicate a vacuum leak. Any thoughts?
[/quote]

-11 inHg is a shitton of vacuum. Double check units (sure you're not in psi?) A/C running? Warmed up idle or cold idle?
 
1 - 4 of 4 Posts
Top