another vacuum leak thread

**zlyricist** · 4-28-06, 12:34

Here's my scenario

installed my boost guage and boost controller over a year ago, and when it was first installed, i pulled about 16inches at idle, and around 20-21 while off the gas in gear. which isnt that bad considering my altitiude

since then i normally idle at about 15inches. i noticed this morning though when i let off the gas in gear, it wont drop past 15inches still. is there something that i can adjust or check to get that back up to normal?

**MazdaMan069** · 4-28-06, 22:38

Check your PVC connection. Also, check all vacuum hoses in the "nest of death" behind the IM. The only other that sticks out to me is the bypass vac line. I've had it pop off before.....also the PVC.

**mx6GT91** · 4-28-06, 22:40

My Mx6 reads 10vac. Hahaha! Use to be 18-20.
No boost leaks either, I have no idea why?

**MazdaMan069** · 4-29-06, 2:05

Damn, Ray. It's not just boost leaks that cause it. Sure you don't have a melted vac hose somewhere?

I usualy read about 18-20 hg at idle and 23 when decellerating.

**zlyricist** · 8-10-06, 16:30

ive gone over and over my car again. i still cant find anything.

is it possible the vaf could be causing the problem? maybe not closing all the way? i really have no clue

**Dyoel182** · 8-10-06, 16:34

Possible but not that likely.

**1stGenTurbizzle** · 8-10-06, 18:22

Do you an extra boost gauge to try out just to eliminate that part. The best idea in my opinion is to just build that tester kit that is in the faq section i beilive sicksix is the one who posted it up. Or the good old soap and water in a bottle and just use those good old eyes.

**Zach** · 8-10-06, 18:31

some form of compressed air, pressure test0r AND soapy water/eyes

Also, check your intercooler

is your idle rough or smooth?

SixSick6 · 8-11-06, 0:12

Quote:

Originally Posted by mx6GT91

My Mx6 reads 10vac. Hahaha! Use to be 18-20.
No boost leaks either, I have no idea why?

Never bothered to check back huh?
http://www.mx6.com/forums/showthread.php?t=166190 (for those of you with a boost gauge.)

**zlyricist** · 8-11-06, 10:46

Quote:

Originally Posted by HotAss6GT

some form of compressed air, pressure test0r AND soapy water/eyes

Also, check your intercooler

is your idle rough or smooth?

idles just fine, bogs down just fine when its in gear and i'm off the gas

it just doesnt pull like it used to

and i dont know if its because of a vacuum leak or a beat down motor. maybe a combo of both....

**Zach** · 8-11-06, 10:50

beat down motor probably....i noticed my vacuum at cold start up is around 19, then after the idle kicks down, it's around 16, then when full warmed up, it's around 17.5.-18.5 in/hg.

I also have 189930 on teh clock...you do a compression, then I will

**zlyricist** · 8-11-06, 11:54

our differences in altitude wouldnt help, and i'm about at 203 thousand now

**Zach** · 8-11-06, 11:55

true...i'm AT sea level...maybe like 20 ft above