downdowhill

  1. XS650-Spark

    Downhill = backfire and fouled plugs

    Hi, I'm Looking for some ideas on why this could be happening... Problem: It runs great until I go down a long steep hill and then the bike begins to hesitate, then backfires and eventually dies. It doesn't matter if I'm on or off the throttle. Every time I find both spark plugs are fouled. I...
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