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View Full Version : Idle and Vac problem SR


driver11324
06-08-2008, 04:52 PM
I know that the vacuum should be at 20 in.Hg at idle, but with my car its around 10 in.Hg. I do have cams, but they aren't anything too aggressive (264 in/ex step 1). Sometimes the vacuum goes below 10 in.Hg during idle. The only time I see 20 in.Hg is after I give it throttle and the RPM's go 1200-1400 then it drops to idle and so does the vacuum. It never really bothered me until the other night and now the problem is just annoying me. I am going to do a boost leak check in a little, but are there any other things that I should check?

Ninjabread
06-10-2008, 07:51 PM
Hmm I have the same issue with my car, same cams but step 2, and my vacuum at idle sits close to 10 all the time...

driver11324
06-10-2008, 09:26 PM
I did a boost leak test and found that my MBC was leaking, so I ordered an AEM Truboost. Hopefully that will fix some of it.

Ninjabread
06-10-2008, 09:28 PM
Oh ok good to know!

I'll try looking for vac leaks on mine too.