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2001 15hp 4 stroke over revving
Can you verify this motor has a rev limiter function?
Since purchasing this motor used I have experienced it knocking and cutting out when at full throttle. It is subtle at 1st but will get worse over time. Otherwise runs great. Starts great. A mechanic rebuilt carb last year and no change. This year I took it to an evinrude dealer (where motor was originally purchased). I did not include my tank or fuel line. They drove it and said it was fine. Charged me $200. I ***umed it must be fuel line and purchased one from them. Problem still exists! I return with fuel line and tank. They say it is overrevving and rev limiter is kicking in. They recommend largest diameter prop. When I come and pick it up it already has the largest diam prop. 9 1/4 x 11. Said they checked prop for slippage and it's good. I have already ordered a prop online. I am finding it hard to believe it is over reving. It's only a 15 on a 14 ft aluminum vhull(row boat). It's a 1975 meyer. Heavy duty built. What else might this be? I just can't believe a 15 would over rev with a speed prop on it. They say they checked at the plug and it was turning 6400 and max is 6000. Thanks for any new ideas for troubleshooting this or at least disproving rev limiter is kicking in.
Since purchasing this motor used I have experienced it knocking and cutting out when at full throttle. It is subtle at 1st but will get worse over time. Otherwise runs great. Starts great. A mechanic rebuilt carb last year and no change. This year I took it to an evinrude dealer (where motor was originally purchased). I did not include my tank or fuel line. They drove it and said it was fine. Charged me $200. I ***umed it must be fuel line and purchased one from them. Problem still exists! I return with fuel line and tank. They say it is overrevving and rev limiter is kicking in. They recommend largest diameter prop. When I come and pick it up it already has the largest diam prop. 9 1/4 x 11. Said they checked prop for slippage and it's good. I have already ordered a prop online. I am finding it hard to believe it is over reving. It's only a 15 on a 14 ft aluminum vhull(row boat). It's a 1975 meyer. Heavy duty built. What else might this be? I just can't believe a 15 would over rev with a speed prop on it. They say they checked at the plug and it was turning 6400 and max is 6000. Thanks for any new ideas for troubleshooting this or at least disproving rev limiter is kicking in.