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  1. 01-21-2009 09:09 PM #1
    adr3naline fix
    adr3naline fix is offline
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    Sold 01 1.8T, 05 Mini Cooper S JCW, 04 ZX10R Track
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    Boost leak test?

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    My a4 normally runs around 18psi (gt2871r). I just installed a new boost gauge (the last one was not working for a long time) and it shows 7psi! what the hell?! It doesn't pull as hard as it should....

    I used search, and al I found were driver/car-specific problems. Where can I find a write up on how to perform a boost leak test?
    My car is SOLD
    2001.5 1.8TQM || GT2871R Hybrid Elim @ 24psi | Unitronics Custom | 307awhp | etc | $15k+ in parts alone
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  2. 01-23-2009 07:44 AM #2
    adr3naline fix
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    My Garage
    Sold 01 1.8T, 05 Mini Cooper S JCW, 04 ZX10R Track
    Location
    Milwaukee

    Re: Boost leak test?

    After finding a big enough tennis ball for my intake to use the tennis ball method, I have a question...Don't I need to clamp off the crankcase hose before I presurize the system? If not that hose...do I need to clamp off any others?
    My car is SOLD
    2001.5 1.8TQM || GT2871R Hybrid Elim @ 24psi | Unitronics Custom | 307awhp | etc | $15k+ in parts alone
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  3. 01-23-2009 09:07 AM #3
    akielb
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    Veteran Member Three Rings
    Join Date
    Oct 27 2006
    AZ Member #
    12913
    My Garage
    Pearl 98.5 Audi A4 1.8T
    Location
    Fargo, ND

    Re: Boost leak test?

    you take out the pcv and plug the hole
    1998.5 1.8TQT (SOLD)

    Joined the Dark Side
    2008 Honda Pilot SE
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  4. 01-23-2009 09:12 AM #4
    CONTROL ONE
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    Sep 19 2008
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    33202
    My Garage
    2014 BMW M235i 6MT, 2010 Audi S4 6MT
    Location
    Toronto, Canada

    Re: Boost leak test?

    The tennis ball method? Wtf?

    It costs 12 bux to make one yourself. Do it.

    There is a full guide how do it on a B5 S4 on AWE's website, just adapt it to your A4.
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  5. 01-23-2009 09:23 PM #5
    adr3naline fix
    adr3naline fix is offline
    Veteran Member Four Rings adr3naline fix's Avatar
    Join Date
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    My Garage
    Sold 01 1.8T, 05 Mini Cooper S JCW, 04 ZX10R Track
    Location
    Milwaukee

    Re: Boost leak test?

    Did a boost leak test. No leak! Was a problem with my N75 valve
    My car is SOLD
    2001.5 1.8TQM || GT2871R Hybrid Elim @ 24psi | Unitronics Custom | 307awhp | etc | $15k+ in parts alone
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  6. 01-23-2009 09:40 PM #6
    AudiTurbo
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    Sep 28 2006
    AZ Member #
    12089
    Location
    Lexington

    Re: Boost leak test?

    What was wrong with it?
    No Slip Just Grip!!
    98.5 A4 1.8TQMS
    K04 | GIAC PC-16 | FMIC | 3" Neuspeed Exhaust | ATP Test Pipe | Raceland Coilovers | N75 Race | Forge 007 | K&N | VDO Boost Gauge | A8 BBK | Rear Fog Light Mod
    07 A4 3.2LQ - K&N
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  7. 01-23-2009 11:53 PM #7
    adr3naline fix
    adr3naline fix is offline
    Veteran Member Four Rings adr3naline fix's Avatar
    Join Date
    Dec 17 2008
    AZ Member #
    36484
    My Garage
    Sold 01 1.8T, 05 Mini Cooper S JCW, 04 ZX10R Track
    Location
    Milwaukee

    Re: Boost leak test?

    I had the ambient pressure inlet blocked off. Weird problem!
    My car is SOLD
    2001.5 1.8TQM || GT2871R Hybrid Elim @ 24psi | Unitronics Custom | 307awhp | etc | $15k+ in parts alone
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