Vacuum Problem

[moliver]

I used to have my vacuum at -20 at idle. Now it is only around -13. Is there a reason for this?

Maybe boost leak?

 

[uh-oh]

yes definitely a vacum leak check the pcv and hoses going to it...thats the main place where i see that problem

 

[moliver]

Thanks, i will be doing boost leak test tomorrow

 

[TalonBoii91]

Hey let me know if thats your problem, cause my vaccum reads, 10, 11, or 12....and my car isn't running right, when ever its at full throttle it won't go anywhere, this happens about 98% of the time i'm driving it, but when it runs fine the other 2 % of the time, it reads 15 or 16 of vaccum....which thats what it used to read all the time so i know thats normal for my car, but 10, 11, 12 is definitely something wrong. Let me know how you made out, and what was the problem.
Thanks

 

[andrewjscott]

check your emissions vac lines. That's where I had a leak.Mine would read normal on start-up (weather hot or cold) for a minute and then fall to 13 in hg.

 

[TSiWarrior]

how exactly should I check teh vaccume?

 

[moliver]

ok, turns out my one of my piston rings is shot!!

HELL YES!!!

NOT!

oh well, i had been putting off rebuilding my engine wit all forged internals. Now i have to

Time to rebuild.