boosting issue...(02 STI)
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This is a discussion on boosting issue...(02 STI) within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; ok so last 4-6 weeks I have been getting a strange noise when the boost kicks in...no more nice whistle, ...

  1. #1
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    boosting issue...(02 STI)

    ok so last 4-6 weeks I have been getting a strange noise when the boost kicks in...no more nice whistle, rather it sounds like a leaking exhaust (screwed airflow), and also it feels like the boost isn't at its full potential...the car doesn't really kick as much =[ however when the car is not boosting then it runs perfect...

    2 mechanics have looked over it and found NO leaks in any part of the exhaust...however 1 did highly possibly find a petrol leak.

    could this petrol leak be the cause of this? if anyone can suggest anything else it may be (turbo issue? etc) pls comment!
    Last edited by gorecki-STI; 06-27-2013 at 01:24 AM.
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  3. #2
    He simply abides. SD_GR's Avatar
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    Fix the fuel problem. Check for vacuum and boost leaks again. Check the fuel pressure regulator.
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  4. #3
    Luke Skywalker Mikie13's Avatar
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    None in the exhaust you say...so start looking pre and post turbo for leaks.

    And also fix the fuel problem.
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    fuel pressure regulator?
    will this tell me (certain) if I got a petrol leak? my mechanic has only had a rough look so far so just estimating ATM.

    Im getting it checked through another good mechanic on Tuesday so I shall update then.
    when love of power... overcomes the power of STi, the world will see peace

  6. #5
    Luke Skywalker Mikie13's Avatar
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    Quote Originally Posted by gorecki-STI View Post
    fuel pressure regulator?
    will this tell me (certain) if I got a petrol leak? my mechanic has only had a rough look so far so just estimating ATM.

    Im getting it checked through another good mechanic on Tuesday so I shall update then.
    Its just a common place for a fuel leak. If your car is relatively older as well, fuel lines my also be prone to cracks, causing leaks.
    The Hawk-Eye Alliance #90|The Blobeye Syndicate #0|The Stink-Eye Mob #0|N.E.R.D. Founding Member & #3
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