Hi,
For the last 10 years after the last overhaul, often my A4 would emit lots of blue smoke in its exhaust when it is rev'd up above approx. 1300 RPM in gear. But the blue smoke would entirely stop as soon as I rev it down to a lower RPM.
My propeller is the three bladed, pitch-changing, Max prop, and the boat is Pearson Vanguard (32', approx. 12,000 lbs).
What is the cause for the blue smoke, and can it be corrected?
Thanks much.
Larry
Pearson Vanguard 32'
Hull #67, 1963
For the last 10 years after the last overhaul, often my A4 would emit lots of blue smoke in its exhaust when it is rev'd up above approx. 1300 RPM in gear. But the blue smoke would entirely stop as soon as I rev it down to a lower RPM.
My propeller is the three bladed, pitch-changing, Max prop, and the boat is Pearson Vanguard (32', approx. 12,000 lbs).
What is the cause for the blue smoke, and can it be corrected?
Thanks much.
Larry
Pearson Vanguard 32'
Hull #67, 1963
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