how do i do a boost/vacuum leak test?
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This is a discussion on how do i do a boost/vacuum leak test? within the Engine Performance forums, part of the Tutorials & DIY category; i have a 02 wrx wagon, and i have a pretty bad idle surge i couldnt find much in to ...

  1. #1
    Registered User
    Join Date
    May 2012

    how do i do a boost/vacuum leak test?

    i have a 02 wrx wagon, and i have a pretty bad idle surge i couldnt find much in to forums on how to do it. if you have any suggestions that would be awesome

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  3. #2
    Registered User UEDan's Avatar
    Join Date
    Oct 2011
    Santa Ana, CA
    You need a tool called a "boost leak tester". You will pump air into your intake track and listen for leaks or spray soapy water to get a visual of the leak.
    A quick Google search will yield many sites to buy one premade and instructions to make one yourself if that's your fancy.

    But until then, get a screwdriver and tighten every hose clamp from the air-box to the throttle body. Dont torque the crap out of it, just a sure hand tight.

  4. #3
    ¯\_(ツ)_/¯ Rambo's Avatar
    Join Date
    Oct 2010
    Portland, OR
    I Support ClubWRX
    Here's a good link to a DIY one. A bit on the fancy side, but you can scale it to your needs:
    Another DIY Boost Leak Tester - Home Depot and AZ parts - NASIOC
    Isaac -- 2003 WRX sedan Stg II - Gave its life for mine 6/2013.
    2007 Outback 3.0R wagon
    Proud owner of a N.E.R.D, Member 1.38×10-23

    The pursuit of knowledge is hopeless and eternal... Hooray!!! - Professor Farnsworth

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