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Thread: My 400 has a smoking problem.

  1. 07-25-2003, 01:18 PM #1
    bandit390
    bandit390 is offline Senior Member
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    My 400 has a smoking problem.

    When I start it up it smokes for about the first 1-2 minutes. What could the problem be?
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  2. 07-25-2003, 02:07 PM #2
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    bansheeguy77
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    get it some nicorette
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  3. 07-25-2003, 03:14 PM #3
    pnut420
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    Re: My 400 has a smoking problem.

    Originally posted by bandit390
    When I start it up it smokes for about the first 1-2 minutes. What could the problem be?
    Wow! Bad rings, fried piston, bad CDI, jetting might be off, their are tons of things it could be
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  4. 07-25-2003, 03:25 PM #4
    bandit390
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    Could the valve seals be one of the reasons? What happens when they go bad?
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  5. 07-25-2003, 03:53 PM #5
    thumpa6x
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    what color of smoke???? if its blue yes it could be valve seals
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  6. 07-25-2003, 04:02 PM #6
    ridesa02400EX
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    i wouldnt worry about it mines been doin it for the past year dont worry as long as it stops and make sure you have oil
    02 red 440EX

    CHM silencer, 440 kit, douglas .190s all around, rear holeshots, renthal bars, renthal grips, free flo red vent hose, OMF air scoops, DG full chassis skid plate, stickers, AC mudscreen bumper, Renthal 14t front sprocket, AC nerfs, WB air filter, racecut, holeshot fronts, msr raptor clutch lever and perch, parking brake block off, renthal grips, powerbong
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  7. 07-25-2003, 06:07 PM #7
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    drip
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    It sounds like the valve seals. Just make sure you check your oil often.
    2000 TRX400EX

    NG Racing
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