Need help with Backfiring and rough idle

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Need help with Backfiring and rough idle

This is a discussion on Need help with Backfiring and rough idle within the ZR-7 Maintenance forums, part of the Kawasaki ZR-7 category; Hello all ZR mechanics, I hope this thread does not get thrown out by the moderators but I just bought a KLR 650 (still have ...

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  1. #1
    Silver Member wilk's Avatar
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    Need help with Backfiring and rough idle

    Hello all ZR mechanics,

    I hope this thread does not get thrown out by the moderators but I just bought a KLR 650 (still have my ZR-7s) and I am having trouble.

    The motor backfires during heavy deceleration/engine braking and at idle, it is not steady when adjusted to around 1400 rpm, it misses and fluctuates +/- 200 to 300 rpm.

    Any ideas will be much appreciated!
    Kevin Williams
    Montreal, Canada
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  2. #2
    Supreme Being Doug Hyde's Avatar
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    I'm no expert, but does the KLR have an idle mixture screw you can get to? If so, I'd adjust it to get the highest stable idle, then set the idle speed and take it for a test ride. If that didn't work, I'd make sure I didn't have an overly-lean condition from an air leak. It might help others to know if your carb/airbox/pipe are stock.
    2015 Versys 650 ABS
    (Former owner 2003 ZR-7S)
    ZR7OA No. 984, AMA, Retreads Int'l., MSTA

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  3. #3
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    Was it parked for a while (months)?
    ZR-7OA #110
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