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  1. C

    not running all 4 but no dead cylinders

    1985 aeto v4 yamaha 115hp, hard to start and backfires when i rev a little bit. I unplug bottom plug wires when running and it doesnt change anything, top wires kill it. compression is even (100-105) and bores look the same in all 4 (worn but nothing too bad) with endoscope. swapped top and...
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