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need help bringing old 1982 merc 40hp 2 stoke back to life
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<blockquote data-quote="gps4" data-source="post: 508050" data-attributes="member: 31687"><p>Im trying to bring an old motor back to life.</p><p></p><p>before I drop alot of time and $ replacing fuel lines and water pump, themostat and the like, i want to make sure i'm not wasting my time on account of a seized or shot cylinder head. </p><p></p><p>when I take the spark plugs out, i can easily turn the flywheel by hand with little resistance. </p><p></p><p>when I hook up a battery and turn the motor over, the starter motor spins the flywheel quickly and i can hear the pistons cycling in the head. </p><p></p><p>when I put the spark plugs back in and try to turn the flywheel, it is considerably harder to turn by hand. when I try to turn it over using the starter motor, the pinion gear on the starter will not turn the flywheel. what usually causes this?</p><p></p><p>Thanks, </p><p></p><p>gps4</p></blockquote><p></p>
[QUOTE="gps4, post: 508050, member: 31687"] Im trying to bring an old motor back to life. before I drop alot of time and $ replacing fuel lines and water pump, themostat and the like, i want to make sure i'm not wasting my time on account of a seized or shot cylinder head. when I take the spark plugs out, i can easily turn the flywheel by hand with little resistance. when I hook up a battery and turn the motor over, the starter motor spins the flywheel quickly and i can hear the pistons cycling in the head. when I put the spark plugs back in and try to turn the flywheel, it is considerably harder to turn by hand. when I try to turn it over using the starter motor, the pinion gear on the starter will not turn the flywheel. what usually causes this? Thanks, gps4 [/QUOTE]
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need help bringing old 1982 merc 40hp 2 stoke back to life
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