2000 ox66 Yamaha 250 dropping out at 3200rpm - Boating Forum

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2000 ox66 Yamaha 250 dropping out at 3200rpm

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  • 2000 ox66 Yamaha 250 dropping out at 3200rpm

    Have 2000 ox66 saltwater series II 250 dropping out at 32 to 3500 rpms Pulled o2 sensor and cleaned but couldn’t test and it’s still dropping out. From what I’ve read could be trim sensor or regulator/ rectifier. Got a big trip in a week and can’t get mechanic on it so gotta troubleshoot myself. Can hand pump ball to hard so was told probably not fuel pumps. Drained vst and have good gas / check replaced water separators. Can order new o2 sensor but not sure that’s issue. Any ideas would be helpful.

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