Exhaust going into my intake
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This is a discussion on Exhaust going into my intake within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; I bought a 2002 wrx recently. The previous owner put on some after market parts. Exhaust, radiator, intercooler, and others. ...

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    Exhaust going into my intake

    I bought a 2002 wrx recently. The previous owner put on some after market parts. Exhaust, radiator, intercooler, and others. The engine sounds like it was misfiring, but after a little look and taking off the intercooler hoses I found that exhaust gas was going into the intake manifold. What could cause this, and what damage could have been done to the engine with this problem.
    Thank you for any help.

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    Whaat? Exhaust gas getting into the intake tract? How did you come to that conclusion?

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    Registered User EvoEatr's Avatar
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    +1^..???

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    Registered User tarmacsti's Avatar
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    @ jeepets - lol dude that sounded better in your head!

    You obviously have some sort of problem otherwise you wouldnt have posted... but you clearly don't know your way around cars. Now read what you said and think about it, then replay with some usefull info we can try and help with.
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    Registered User WagonGuy's Avatar
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    Did you perhaps find little oil in there?
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    Not quite sure how you came to that conclusion. The only time I have seen exhaust going to the intake manifold was via the EGR valve. (Which is specifically designed to do just that.)

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    I came to that conclusion after a friend and I were trying to figure out what was wrong with the engine. After trying to start it we took off the intercooler ducts going to the intake manifold, and found exhaust gas coming out and oil. So we thought that the turbo seized or a blade broke inside it and blocked the exhaust from going out the exhaust pipe.
    And no I'm not that mechanically inclined but I'm working on it.
    I do appreciate all the help.

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    Moderator Donkey's Avatar
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    Quote Originally Posted by jeepets
    After trying to start it we took off the intercooler ducts going to the intake manifold, and found exhaust gas coming out and oil.
    So let me get this straight,you pulled of the intercooler and then ran the car? And saw exhaust gas come out of where? Take the car to a professional mechanic........even we can't help you if you this new to cars. Your gonna break something and your friend seems to know as much as you. Not trying to be harsh,just realistic. Your gonna cause more problems in the end.
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    Quote Originally Posted by jeepets View Post
    I came to that conclusion after a friend and I were trying to figure out what was wrong with the engine. After trying to start it we took off the intercooler ducts going to the intake manifold, and found exhaust gas coming out and oil. So we thought that the turbo seized or a blade broke inside it and blocked the exhaust from going out the exhaust pipe.
    And no I'm not that mechanically inclined but I'm working on it.
    I do appreciate all the help.
    There is no exhaust gas going into the intake manifold. That is physically impossible.

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    DUB
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    Obviously the previous owner installed an after market DEI unit. Duh, guys.


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    ^ I was actually looking for that last night but couldn't find it.

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    Administrator Trainrex's Avatar
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    Quote Originally Posted by DUB View Post
    Obviously the previous owner installed an after market DEI unit. Duh, guys.

    That's the first thing I thought of

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    Registered User Tinywagon's Avatar
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    +1 for a professional mechanic.

    perhaps the oil is the result of too much blow by due to a bad tune and too much...

    Never mind, go see a mechanic.


    Not trying to be to harsh or anything, but brfatal and everyone else is right exhaust in the intake is impossible unless something is REALLY wrong, in which case a misfire is the least of your problems.

    or you have one of these installed

    O Pipe (Single Exhaust) - $89.95 : KaleCoAuto, Hard to find automotive items!
    Last edited by Tinywagon; 10-09-2009 at 02:22 PM.
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    Thank you all for your responses and help. I appreciate it, also I will take it to a real mechanic. Thank you again. Next time I will know to ask a proper question.

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