Low Vac at idle

**LingLing** · 05-09-2010

My car pulls about ~12 in/hg (Give or take 1 or 2 in/hg) at ~700-800rpms when it's at operating temperature, and anywhere from 16-20+ in/hg at cruising speeds. I think about 70mph in 5th gear I pull close to 18 in/hg. I do have 272 cams though, I'm not sure if how much of a difference 272's make when it comes to pulling vac at idle when compared to stock cams, but if you're at cruising speeds on the highway you should definitely be pulling more than 10 in/hg.

Does it stumble or sound rough when it's at idle?

adidasdudegst · 05-09-2010

no, thats the funny thing, it idles fine. I'm starting to wonder if the line is kinked or the gauge is fd. I guess when I leak test it in the morning I'll check that out too.

**LingLing** · 05-09-2010

Quote:

Originally Posted by adidasdudegst

no, thats the funny thing, it idles fine. I'm starting to wonder if the line is kinked or the gauge is fd. I guess when I leak test it in the morning I'll check that out too.

FYI: I edited my post a minute ago, and not sure if you saw it before you responded.