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    Mercruiser 170 runs bad when hot - voltage regulator issue?

    Yes I think that's exactly what was happening regarding the trim - question was why was the coil being affected in the first place... and seems like it's an issue with the charging system. This engine doesn't have an alternator, just a troublesome stator and voltage regulator setup. I'm...
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    Mercruiser 170 runs bad when hot - voltage regulator issue?

    I set the point gap at .022, but I didn't do anything else to set the dwell. I don't have a dwell meter, so not sure how to do that.
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    Mercruiser 170 runs bad when hot - voltage regulator issue?

    I replaced the points, and that didn't help. I didn't adjust the dwell or timing, but it was doing this before the points swap. I've cleaned up several connections, will check some more. But what about the voltage spike?
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    Mercruiser 170 runs bad when hot - voltage regulator issue?

    So the boat starts and runs fine when it's cold, but after a while, it starts to miss and run very poorly. When this happens, if I then hit the trim (or something electrical), it will completely fall on it's face and lose power. But I noticed that it seems to run fine for a long time if it...
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    85 Mercruiser 170 runs bad when warm

    Forgive me, I know this is a very old thread, just wondering if the OP ever discovered the issue and solved the problem. I'm having the same issue with mine, so I'd love to know. Thanks.
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    How to convert 7.5 hp to 9.8 - vroom vroom

    I have an '81 7.5 merc. How can I convert it to the output of the 9.8? I've heard you can swap the carb or perhaps re-jet the carb, but I haven't gotten a definitive answer. Has anybody done this? BTW, I'm a noob on here, so go easy on me!
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