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Old 20 July 2013, 07:49   #1
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Country: South Africa
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60 HP yam 2stroke missfire

HI
Motor runs well until i start to trawl , starts missing and fouling the number 3 plug. Any suggestions
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Old 20 July 2013, 18:40   #2
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is it autolube or are you adding the oil to the fuel (premix)? Plug fouling on premix at low revs is a widely recognised problem - assuming you are adding the right amount of oil (e.g. not adding "a bit for luck" or just guessing) then not sure much can be done to avoid it - other than a blast of power every so often.
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Old 21 July 2013, 00:30   #3
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Throw a couple buckets in the water to slow the boat down, and up the RPM's to keep the motor working harder so it doesn't foul the plugs.
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Old 21 July 2013, 00:51   #4
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It is premix , mixing 50-1 . Say i mujst check carb float level and coils.
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Old 21 July 2013, 14:55   #5
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Fuel pump diaphragm.
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