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XV1100 Rear Cylinder Backfire

Discussion in 'Technical and Troubleshooting Torque' started by duckie60, Nov 24, 2013.

  1. Hi all have a 93 XV1100 that has just developed a backfire from the rear cylinder at low rpm and idle. Runs fine other than this.
    From what I have found online its pointing towards CDI.
    Has anyone had this sort issue and or any odes as to what it may be. Have changed the plugs and checked all the connections.

  2. Checked your exhaust gaskets, the big cylinder looking one not the little flat ones (don't know the proper terminology). You might find it has been destroyed but if so will probably only cost $20 or $30 to get a new one.
  3. #3 duckie60, Nov 24, 2013
    Last edited: Nov 25, 2013
    Thanks will look into that,
    so if it is, will that cause a backfire in the exhaust ???
    Parts list just has them as "RING, SILENCER"

  4. An air leak in the exhaust can cause popping and banging, 2loud might be right about the cause.
  5. Yep. Definitely check for an exhaust air leak before doing anything expensive with the electronics.

    Besides, it's a V-twin. They're supposed to frap and bang on the overrun :D.
  6. If there's a clean air injection system on those a leaking check valve can also cause popping etc on over-run. The gaskets are the first place to look though. Probably the most common cause.
  7. Thanks all.