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Popping noise out exhaust @ 6500rpm on ninja 250?

  1. #1
    Expatriated to Seoul spicy's Avatar
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    Popping noise out exhaust @ 6500rpm on ninja 250?

    So my girlfriend recently bought a '97 ninja 250 as her first bike, and it seems to be in good shape, although it only has 5k mi on it (seems a little low to be ridden constantly, but carbs seem ok)...

    however, after it's warmed up, if someone rides off on it, it makes this pretty significant popping noise out the exhaust right around 6k-7k rpm if the throttle is open. if anyone has played tourist trophy on PS2, it kinda makes that same noise, so i'm not sure if it's normal or not...

    my brother asked if it did it in any of the other gears, but i've never really been able to see since the only time i get to hear it from off the bike is when my girlfriend is riding away down my street (10-15mph).

    the bike also seems abnormally sluggish under 7k rpm, but as soon as it stops making that popping noise, it peps right up (over 7k). i know it's a really tiny engine, but it just doesn't feel very smooth -- you can crank the throttle wide open in first at 4 or 5k rpm and it'll go up to 7k relatively slowly and then zing its way up to redline as if someone had the brakes on and then let off...

    any suggestions/thoughts/questions? i can try and get a video of it next time she's over...

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  2. #2
    Super Moderator beet's Avatar
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    Do a full tune up.

    Batabing bataboom I would also pull the carbs & yada yada.

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  3. #3
    Lifer
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    Popping noise out exhaust @ 6500rpm on ninja 250?

    Water in the gas, bad gas, junk in the carbs - if that doesn't fix it - have the coils and ignition system checked out.

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    SSearchVT

    For every action there is an equal but opposite reaction - and sometimes a scar...

  4. #4
    Just Registered TLRMan's Avatar
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    Popping noise out exhaust @ 6500rpm on ninja 250?

    Bring it to me, I can take a look at it...
    and you are right down (up) the street too....I'm in Beverly
    We can arrange for Oreogitorio to be there for the entertainment!

    send PM, or EMail below....
    I'm getting busy!, so get a hold of me soon...Had a TLR in last weekend, got another this weekend, prolly saturday, so, if you want a looky act quickly!

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    Too old to rock and roll, too young to die.

  5. #5
    .... naked-daytrader's Avatar
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    Popping noise out exhaust @ 6500rpm on ninja 250?

    Quote Originally Posted by spicy View Post

    however, after it's warmed up, if someone rides off on it, it makes this pretty significant popping noise out the exhaust right around 6k-7k rpm if the throttle is open. if anyone has played tourist trophy on PS2, it kinda makes that same noise, so i'm not sure if it's normal or not

    --------------------------------------------------------------

    That didn't come with sans-nitrious did it? That's affecting alot of the 250 ninja's.......

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    CCS|LRRS EX#49
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  6. #6
    Just Registered TLRMan's Avatar
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    Popping noise out exhaust @ 6500rpm on ninja 250?

    Quote Originally Posted by naked-daytrader View Post
    --------------------------------------------------------------

    That didn't come with sans-nitrious did it? That's affecting alot of the 250 ninja's.......
    he's not running that is he??? Damn!

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    Too old to rock and roll, too young to die.

  7. #7
    Super Moderator OreoGaborio's Avatar
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    Popping noise out exhaust @ 6500rpm on ninja 250?

    Quote Originally Posted by TLRMan View Post
    We can arrange for Oreogitorio to be there for the entertainment!
    I'll be happy to come & entertain, but my hourly rates have gone up.

    I also don't do full nudity anymore..... for legal reasons... Don't ask me how I know, but it's not a good scene when you poke a midget in the eye.

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