206 GTi exhaust backfire. Your experiences?
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  1. #1
    Fellow Frogger!
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    Default 206 GTi exhaust backfire. Your experiences?

    Hi everybody,

    My 206 GTi makes a nice popping exhaust backfire almost every time I change down a gear, let the revs drop, then slowly release the clutch.

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    IS THIS NORMAL?

    I bought my 206 GTi second hand when it was already 11 years old, and I don't know if the exhaust is stock. A mechanic friend of mine said the welds on some exhaust components looked like they were after-market, but I'm not sure if it was just a repair or a new rear muffler or otherwise. The entire system consists of a cat (although the internals may be missing, since mine is a 1999 single lambda sensor engine), followed by two "hotdog" front mufflers and a stock looking rear muffler. I'm certain the manifold is stock because it exhibits the textbook vibrating at a particular rev band.

    Does your 206 GTi have a prominent exhaust backfire?

    Thanks in advance for your replys.

  2. #2
    1000+ Posts robmac's Avatar
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    Quote Originally Posted by Blufires View Post
    Hi everybody,

    My 206 GTi makes a nice popping exhaust backfire almost every time I change down a gear, let the revs drop, then slowly release the clutch.

    IS THIS NORMAL?

    I bought my 206 GTi second hand when it was already 11 years old, and I don't know if the exhaust is stock. A mechanic friend of mine said the welds on some exhaust components looked like they were after-market, but I'm not sure if it was just a repair or a new rear muffler or otherwise. The entire system consists of a cat (although the internals may be missing, since mine is a 1999 single lambda sensor engine), followed by two "hotdog" front mufflers and a stock looking rear muffler. I'm certain the manifold is stock because it exhibits the textbook vibrating at a particular rev band.

    Does your 206 GTi have a prominent exhaust backfire?

    Thanks in advance for your replys.

    Wrong mixture (ie unburnt fuel air mixture in the exhaust) or holes in the exhaust system perhaps?

  3. #3
    Tadpole
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    They all do it, the exhaust 'popping' noise was much more pronounced after I had my rear muffler changed. Easiest way to tell is if the stock exhaust tip is missing. Although I got mine put onto the new muffler. The stock rear muffler is huge, if it looks bigger than a 'normal' muffler, it's probably been changed.
    Fixxxer

  4. #4
    Fellow Frogger! 908HDI's Avatar
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    I never experienced that on mine... It was an early 2001 version with a 140 engine

  5. #5
    Tadpole
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    Mine does this too, it's normal from what I can gather.

    My muffler is an aftermarket one though..

  6. #6
    Fellow Frogger! Brett's Avatar
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    After market aggressive yes.
    Just changed back to quiet exhaust, no popping.
    Whole family hates the new exhaust.
    Theoretically a cat (in good nick) should stop this as it would burn off the unburnt gases

    Brett
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  7. #7
    sans witticism SLC206's Avatar
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    My 206s both had standard exhausts and no popping or backfires ensued.

    I think the aftermarket excuse is a good one.
    Regards,

    Simon

    2018 308 GTi 2011 DS3 DSport
    ----
    2014 208 GTi 2007 207 GTi 2004 206 GTi180 2000 206 GTi 1995 306 XT

    www.peugeotclub.asn.au

  8. #8
    Fellow Frogger!
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    Thanks for all your replys, it sounds like it's a normal enough thing. My car is the 1999 pre-multiplexed model with a single lambda sensor, so antipolution faults don't happen, and the computer seems to run a wee bit rich (the exhaust doesn't smell as bad as a falcon, but does have a scent of fireworks/sparklers), but I am looking at having a cam and tune done soon, so this should fix it running rich anyway.

  9. #9
    1000+ Posts mr bern's Avatar
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    In more than 200,000 km, half of that with an aftermarket exhaust, my MY99 206GTi never backfired, so it's anything but a normal condition. Never smelled, either.
    MY15 208GTi

    previously:
    MY10 Sportium HDi6 and 1.6L auto
    MY99 206GTi
    MY96 306XSi auto
    MY02 Clio 1.4L auto

    1ére grenouille:
    MY5? Simca Aronde 90A



    QUICK! MORE BREAD, MORE CIRCUSES!!

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