1970 Mercury 4.0 question

jleje68436

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Sep 6, 2013
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First off, to the people who helped with the electrical information on this motor, huge thanks. Second question now, this little motor will start up 2nd or 3rd pull, without chocking it. Will run great for about 2 or 3 minutes than die. I replaced the needle valve and seat in the carb and replaced the gaskets and 2 valves in the fuel pump, but still the same problem. Checked with a few of the marine repair shops around here, but none will even attempt to work on it or give any information to help. All they say is that this motor is old and obsolete and I need to get a new one. Can't afford that and this motor will be a good one to use on my little aluminum boat. Anyway, any info will help. Thanks, John
 
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