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    Poor Idle

    I have a 75 mercury 850 with great compression, 150 psi on each, spark, and the fuel pump works, but I cannot get the engine to idle in gear for more than 5 minutes without having the RPMS at 1000 or not stall when going into gear. I have cleaned and rebuilt the carbs twice. I was trying to...
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    Paint Livewell?

    I am restoring an older bass boat. I have rebuilt it from the hull up. The last thing i have is a nasty black live well. The livewell is fiberglass, so i was wondering. I have some left over interlux bilgekote and I was wondering if i can sand and paint the livewell with it. If not what is...
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    ? on rebuilding engine

    I have 2 75 merc 850's one i have decided to use as a parts motor. I took the one apart completly and i checked the gap in the reed valves and 2 of the valves are open about .015. Should i get new valves or are the ones i have fine?
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    timing problem

    I have a 75 merc 850 that i changed the distributor in because i found rust around the rotor so i changed it with one i cleaned up. When i took the flywheel off i just unscrewed the eight bolts from the top. I put the flywheel back on acording to the marks on the flywheel at tdc, but my engine...
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    engine is missing really bad when idling.

    I have 1975 merc 850 and i just replaced the timing belt because it was really cracking. I put the flywheel back on but mark wore off, so i used a screw driver to find tdc and it seems like i did but when i line the arrow (on the dist.) with the 3 dots on the flywheel the engine revs to high so...
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    laddies I need your help!!!!

    I have a 1975 mercury 850 with the thunderbolt ignition system. I went to start the engine yesterday and it would not start. I checked the spark and thier was none. I checked the red and white wires and only the red has power. I checked the rectifier, coil and they are fine. I did the test...
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    75 merc 850 with no spark

    I have a 1975 Mercury 850 and i am not getting spark.<br /><br />I took the motor off to do some transom repairs and it worked great. Now I do not have spark. The motor only sat for 3 days. I check the rectifier and it is fine i checked the stator and it tested ok, i also checked the coil and...
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    74' mercury 850 no power???

    i have a 1974 merc 850. when im on the water the engine starts, and idles, but when we open it up it tops out at 7mph. the compression is good (all cylinders 100-105) the engine has spark, and i just put a new prop on it??? what else could be wrong, i just rebuilt the carbs, cleaned out the...
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