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Thread: Oh boy... bad sounds ...

  1. #1
    Join Date
    Aug 2019
    Location
    Southern California
    --
    69

    Oh boy... bad sounds ...

    I have an 84 250r , took it to ct racing to get top end done. We got it back and put it all together, gas tank and fresh mix back on, fresh oil change, new plug. Now that bad part!...

    I kicked it about 4 times to start it and it sounded very promising, then I kicked again and there was a new sound, definatly a scratching noise , loud . I tried about 2 more kicks on top of that, same noise and then stopped and put it away we were too disappointed. Anyone know what this could be? Is this something common or horrible or can be fixed?? Thank you.

  2. #2
    Join Date
    May 2006
    Location
    The Open Road
    --
    4,729
    There is no good way to diagnose a scraping/scratching noise in the motor without taking it apart, which you'll have to do anyway because it's not running right. It could be at least a dozen different things and none of them can be fixed without taking motor apart to some degree and finding the issue

    Sent from my Z958 using Tapatalk

  3. #3
    Join Date
    Nov 2015
    Location
    Davenport iowa
    --
    1,144
    Is the noise only present during trying to kick it over or is it present when it’s running also?
    90 nickolson Bored and Stroked "The Good"

    Big Bore 110 Pauter frame "The Bad"

    90 Bored and Stroked “vey’s frame” "The Ugly"

    110 JSC frame Bored and Stroked
    flat track build. “Shop trike”

    1974 original 90 X 2

    1974 Original 70.

  4. #4
    Join Date
    Aug 2019
    Location
    Southern California
    --
    69
    I didn't get it to start , so far only when I kick it

  5. #5
    Join Date
    Jul 2009
    Location
    South Florida
    --
    6,722
    Pull it back apart , maybe one of the piston rings snagged a port .
    Always crank a fresh topend job over a few cranks to check for issues before installing the head .
    78 atc 90/180cc Dickson Full Suspension
    76 ATC90/180cc Nicholson
    77 atc 90 Dickson Full Suspension
    84 KLT 110/123cc Powroll Racer from 80s
    87 atc 125m stock
    84 atc 200x Curtis Sparks
    84 atc 200x Powroll My race bike from 80's
    83 atc70/108cc Powroll blue Xmas Special
    81 atc185s HP-ATC full suspension

    Performance Shop is Open PM me for Service

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  6. #6
    Join Date
    Apr 2011
    Location
    Mexico
    --
    9,003
    Like the guys say, you need to take it apart.

    Odds are you either lost a clip or you put the piston in backwards and snagged a ring.

  7. #7
    Join Date
    Aug 2019
    Location
    Southern California
    --
    69
    Ok thanks. I took the head off to take a look, everything looked good actually , no scratches or scapes and kicked the starter about 10 times and sounded perfectly smooth . From the looks of it the rings looked in place too but it started to rain so had to pack up quick before we got the cylinder off..

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