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I have a 87 340 yamaha entecer it will ilde no problem but when tring to drive it, it strats to bog & just quits when hot? what could be the problem?

This motor has the elec start on it too, cleaned carb, new plugs, ckecked fuel filter clean

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Check the compression on the engine, maybe losing compression?

Posted on Jan 03, 2017

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Posted on Jan 02, 2017

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Hi, Crazycowboy1 and the usual suspects are:
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My '94 yamaha waverunner 3 runs great for the first 30 minutes. After that it will run fine at idle and just above but the rest of the throttle it just bogs, like it is running out of gas or has some kind...


Could be a bad temp sensor. The bog is a rev limiter to keep engine from running full throtle when hot or when there is another problem. You can bypass the temp sensor and see if that takes care of problem. The parts about 100.00. I disconnected mine a now run a temp gauge which I mounted on the right side just above oil gauge.

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Throttle bog out


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Bogging out


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