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Thread: atc 350x pipes glowing red

  1. #1
    ustin666 is offline At The Back Of The Pack Arm chair racerFirst time rider
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    Dec 2009
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    atc 350x pipes glowing red

    i drove my trike from my drive way to my garage its lit 150 foot ad there like 1 foot of snow sow it had it 1/2 throttle at 2e gear all the way it did not go fast but i got there . when i arrived my pipe was glowing red lol. that is not good right ?

  2. #2
    Join Date
    Feb 2011
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    fingerlakesny
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    2,834
    nope, sounds like a carb. problem 2 me..

  3. #3
    Join Date
    Mar 2010
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    Abrams, Wisconsin
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    Sounds like its running lean.
    86 tri z - might be nearly done throwing money at it! (good thing, the hondas are getting jealous!)
    86 250sx - old reliable
    83 atc 70-new project for me and the boy
    another 82 110
    a bunch of golf carts for the wife and kids
    -gone but not forgotten-
    82? 110 - why did i sell it??
    84 225dx - meh, it was a pile

  4. #4
    Join Date
    Jul 2011
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    Chattanooga TN
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    I have NO idea what could cause it, never heard of that to be honest. Keep us all posted when you figure it out....

  5. #5
    Join Date
    Jan 2003
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    Southern MN
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    1,875
    It could be out of time also, too far advanced, and that will make it run hot, because the spark occurs before the piston reaches top dead center. Check the carb, and especially for air leaks first. Especially near the intake manifold on engine side of carb. An easy way to check it is to start the engine, and spray starting fluid around the mani. If the engine revs up or stumbles, there is a good chance there is an air leak at that gasket, or a crack in the boot. I have seen this many times. ------ Jon.
    THE 80's RAGE! Currently owns:
    81, 85 Yamaha Tri Moto 125
    83 Yamaha Tri Moto 200 x2
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    85 Yamaha Tri Z 250
    84 Kawasaki Tecate 250
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    85 Honda ATC 350X
    84 Honda ATC 250R
    (2) 84 Honda ATC 200x
    82, 83 Honda ATC 185s
    81 ATC 200
    Lots of other parts and bikes

  6. #6
    Join Date
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    I love learning from you guys. Hope I never need some of the info that I learn though.....

  7. #7
    Join Date
    Feb 2011
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    Sarnia, Ontario, Canada
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    I'd agree with the others, but suggest you check for exhaust flow restriction also. Too much back pressure like a plugged muffler will cause the exhaust heat to buildup in the front pipe..
    Current toys..
    1986 Honda 350X..trail bomb!
    1985 Honda 250SX..my main mudder
    1985 Honda 250ES..Back in Black Trike
    Current non-trike toys:
    1990 Honda TRX300FW
    1995 Seadoo GTX
    1998 Polaris Indy Lite 340(Nearly new looking)
    1998 Polaris Touring 500
    1998 Club Car (electric)

  8. #8
    Join Date
    Oct 2002
    Location
    Northeast
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    17,488
    What exhaust are you running?

    Is the air box lid on or off??

    Any other mods??
    All our government does is distract us while they steal from us, misspend our tax $ and ruin our country

  9. #9
    blkstangman88's Avatar
    blkstangman88 is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    Nov 2010
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    marysville
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    282
    My stock yfz 450 did it from running lean. Rejetted more rich. Just a size n it stopped. Ran better to

  10. #10
    Join Date
    Oct 2002
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    Snohomish, Wa
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    1,028
    Yup agreed with all above. It could be many things. I suggest check timing, check valve clearance, check spark plug for lean running. I had a raptor that did that and it was too far advanced in timing.

    Tyler
    85 ATC 250r -Under Construction
    86 TRX250r
    05 KFX400
    02 400EX

  11. #11
    Afrothunderkat's Avatar
    Afrothunderkat is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    Richmond NH
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    Its air cooled... take any air cooled engine, and hold the throttle steady at 1/4 while staying still.

    Pipe will get red, air foolers need constant airflow. Trudging through the snow puts the engine under load and at a slow steady pace, pipes will heat up quick. But i would look into what the others have said, too lean and timing.
    2003 RM 250 ::: 1985 ATC 250R ::: 1986 ATC 250ES
    -----------------------------------------
    Past Trikes: 1985 YTM 225DX ::: 1984 200s ::: 1985 YTM200

    Past Bikes: 1987 KX80BW ::: 2002 TT-R 125L ::: 2000 RM 125

    Quote Originally Posted by Tri-ZNate View Post
    Talking about the build quality, I got their exhaust and economy muffler and it fits together like tossing a hot dog down a hall way with nothing provided to take up the slop. Best $200 ever spent

  12. #12
    Join Date
    Nov 2010
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    ^^ Not all air cooled models do that.... ridiculous advice.

    He definitely is either running VERY lean, or his timing is too advanced...

    Jason.
    1985 Honda 250r x2
    1986 Honda 250r
    1986 Honda 250sx
    1985 Honda 250sx x2
    1985 Honda 350x x2
    1986 Honda 350x
    1984 Honda 125m x4
    1983 Honda atc 70 w/ Lifan 125
    1984 Honda atc 70
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  13. #13
    Join Date
    Feb 2011
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    Quote Originally Posted by Jason125m View Post
    ^^ Not all air cooled models do that.... ridiculous advice.

    He definitely is either running VERY lean, or his timing is too advanced...

    Jason.
    Agreed, especially not in 2 minutes in cold weather..
    Current toys..
    1986 Honda 350X..trail bomb!
    1985 Honda 250SX..my main mudder
    1985 Honda 250ES..Back in Black Trike
    Current non-trike toys:
    1990 Honda TRX300FW
    1995 Seadoo GTX
    1998 Polaris Indy Lite 340(Nearly new looking)
    1998 Polaris Touring 500
    1998 Club Car (electric)

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