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  1. W

    Yamaha VZ250TLR

    Lost spark on cyls 1 and 4 and I have good coils. Would this be the CDI box or the ECU? Or something else I haven't thought of? Thanks in advance!
  2. W

    No spark on 2 cyls of 6

    I have a 2006 Yamaha model vz250tlr and I have no spark on #'s 1 and 4 spark plugs out of 6. It runs at idle speeds and wants to surge at times. Would it be the ECU unit or the cdi box. I put new coils on it and it made no difference.
  3. W

    Mariner 20HP Year?

    it doesn't have mine listed anywhere. Mariner 20hp ser# 6634132
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