Vacuum reading - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


Engine Performance This section is for discussion on all engine building related questions.
Sponsored by:
Sponsored by:

Reply
 
 
 
LinkBack Thread Tools Search this Thread
Old 10-16-2010, 12:46 AM   #1
Junior Member
Thread Starter
 
Join Date: Jan 2009
Location: Ashe County NC
Posts: 217
Total Cats: -1
Default Vacuum reading

What is considered a "Normal" vacuum reading on the '97 engine? The gauge in my car reads about -12(in/hg?) at idle, my dad's ms6 reads about -22.
adamhershner is offline   Reply With Quote
Old 10-16-2010, 01:28 AM   #2
Elite Member
iTrader: (13)
 
Join Date: Dec 2006
Location: Taos, New mexico
Posts: 5,702
Total Cats: 237
Default

You either have a vac. leak or a broken gauge. IIRC, sea level you should be around -20 or so.. At my altitude (7,000+) mine reads -18.
Fireindc is offline   Reply With Quote
Old 10-16-2010, 12:23 PM   #3
Senior Member
iTrader: (14)
 
Join Date: Aug 2008
Location: Tinley Park, IL
Posts: 1,488
Total Cats: 0
Default

Mine's -20 at about 650 feet above sea level. -12 sounds pretty low unless you live on Mount Everest.

I concur, check for a leak.
lordrigamus is offline   Reply With Quote
Old 10-16-2010, 12:25 PM   #4
Senior Member
iTrader: (8)
 
Join Date: Jun 2010
Location: Navarre, FL
Posts: 1,127
Total Cats: 39
Default

-24 here about 1 ft above sea level
aaronc7 is offline   Reply With Quote
Old 10-16-2010, 03:38 PM   #5
Junior Member
iTrader: (2)
 
Join Date: Jul 2009
Location: langley BC
Posts: 134
Total Cats: 0
Default

-20 on mine...
sasquatch is offline   Reply With Quote
Old 10-16-2010, 08:52 PM   #6
Elite Member
iTrader: (18)
 
Join Date: Dec 2007
Location: oahu
Posts: 1,720
Total Cats: 2
Default

20-25 on mine. Try swapping meters between cars (if you can easily do so).
astroboy is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Project Gemini - Turbo Civic on the Cheap Full_Tilt_Boogie Build Threads 57 07-19-2017 05:11 PM
OTS Bilstein to motorsports ASN conversion stoves Suspension, Brakes, Drivetrain 5 04-21-2016 04:00 PM
My solution for Oiltemp and Oilpressure input into Megasuirt (MS3) Zaphod MEGAsquirt 41 01-24-2016 01:25 PM
Low oil pressure after 1.8 swap and new turbo setup JesseTheNoob DIY Turbo Discussion 15 09-30-2015 03:44 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 10:37 PM.