28 Vacuum normal?

Crawl · Jun 2, 2005

I live in maine, not in the mountains, my vacuum at idle is 28 Hg seems a tad high to me, what would cause this?

thanks in advance

Crawl · Jun 2, 2005

i know im getting boost leak from teh BOV , would that affect Vacuum at idle?

skelly · Jun 2, 2005

Now just how would a vacuum "leak" cause above-normal vacuum? That doesn't make a heck of a lot of sense to me. :confused:

VBGSX · Jun 2, 2005

skelly said:
Now just how would a vacuum "leak" cause above-normal vacuum? That doesn't make a heck of a lot of sense to me.

I have to agree.
Vacuum leaks will give you LESS vacuum. NOT more!

One reason for it could be a bad boost guage.
What kind is it? I would check the simple thing first.

Crawl · Jun 2, 2005

well heres the thing it reads boost perfect, it also is at around 20-22 Hg when i first start the car, but slowly my idle goes up to around 1200 and at the same time i see my vacuum go up to 26+ i let my car run for a while today and it kept going until it hit 29-30

DSMSpyder99 · Jun 2, 2005

WTF at idle my car is around 16-18. While moving and letting go of the accelerator it drops to 22.

blackGSX2g · Jun 2, 2005

my idle vac is at about 21hg..on a decel it goes to about 28-30.

Crawl · Jun 2, 2005

would BOV leak or high idle cause my 28hg?

leakyfaucet · Jun 3, 2005

Yes, the higher the rpms, the higher the vacuum, unless boost is put into the mix.

fulanititoo8198 · Jun 3, 2005

If it helps any mine idles at 20-22 with leaks in the exhaust mani,valve cover, and headgasket.

Defiant · Jun 3, 2005

VBGSX said:
Vacuum leaks will give you LESS vacuum. NOT more!

Unless they're between the throttle plate and the piston-tops, vacuum (or, boost) leaks will have no effect on manifold vacuum.

Find out why your idle is so high.

Crawl · Jun 3, 2005

well some times my idle is around 800 sometimes its up to 1500, and now with my new fun sometimes it doesnt idle at all

Crawl · Jun 4, 2005

well my car is done, dont know what the loud clacking is but it got alot worse and now my car is idleing at around 100 and will barely stay running unless i rev the crap out of it , the belts are squeeling really bad, and i just give up

->PrOjEcTGS<- · Nov 12, 2008

Holy thread revival Batman!!!

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xsboost · Nov 12, 2008

->PrOjEcTGS<- said:
Holy thread revival Batman!!!

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I guess you have to get those 50 posts anyway you can.

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28 Vacuum normal?

Crawl

Crawl

skelly

VBGSX

Crawl

DSMSpyder99

blackGSX2g

Crawl

leakyfaucet

fulanititoo8198

Defiant

Crawl

Crawl

->PrOjEcTGS<-

xsboost

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