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    Power Trim won't stop trimming up on Merc

    My nephew has a problem with his 200hp Merc EFI 2001. The engine trims up and won't stop. He found the motor trimmed up and the relays burned out in his boat barn one morning. It happened over night. He replace the relays and it worked for about a week. It's started doing it again, the...
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    Joe Reeves and yepblaze, Thanks

    Thanks you 2, the problem was a sheared key. Everyone down here (Corpus Christi) was saying there was no way it had jumped time, that it was the carbs. Well, sure nuff, we pulled the flywheel this morning after Joe's response and the key was sheared. Thanks again.<br />Bryan Pundt
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    More Help; Still Won't Start

    1984 Johnson GT 150. Checked gas, no prob. Cleaned Carbs, new plugs, flywheel key is OK, compression 84 lbs all 6 cyls. Still won't start. Backfires. This engine is a cross between an 83 and 84. Should run on leaded gas, we are running 89 octane unleaded. Is there anyway to check timing? Acts...
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    Engine wont start

    We have a 1984 Johnson GT 150. This week while fishing, the engine made a different sound maybe a miss, the next morning, it started, put in nuteral, engine died, would not start again. Engine backfires when trying to start. 2 mechanics said carbs w/junk. Cleaned the carbs w/cleaner, didn't...
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