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I have a boat motor that will hit high rpm's in neutral , but when you put it in gear the boat will only reach about 5 miles an hour

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  • 57 Answers

Sounds like low compression. You can check with gauge at plug holes. If you dont have one , you can get a loaner at auto parts store.

Posted on Jan 12, 2013


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Posted on Jan 02, 2017

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SOURCE: Prop not turning

if the prop spins out of the water but not in
it could just be a bad hub inside the prop
good luck with it

Posted on Jul 06, 2009

  • 155 Answers

SOURCE: Shifter jumps out of forward gear on 64 9 1/2 hp Johnson motor

sound like the shift fork, or fwd gear is damaged in the lower unit.....special tools are required for this repair .....if you got them cool, if not seek a shop for further assistance.......hope this helped...GL

Posted on Jul 06, 2009

  • 5 Answers

SOURCE: My mercury 135 boat motor cuts off when I put it

hmm!!!!!!!! just cut off ah gear.

Posted on Apr 03, 2010

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