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banjo1951

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banjo1951

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hi I have a 1984 evinrude70 hp that will run in neutral but when you put in gear at about 1800rpm it falls flat on its face the motor sat two yrs I checked compression and it as 118 105 110 if I push in key it picks up a bit took carbs apart and high speed jets are clean fuel pump seems to be pumping good don't know what to do next plugs are new
 
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How long have you owned it.---Those compression numbers are not good in my opinion.----Do you have spark on all 3 leads ?---Checked flywheel key ?
 
My tester would show 140+ on those motors.----Cost you a head gasket to have a look in there.-----A cheap inspection !
 
Some want to argue.-----Warm or cold does not matter.-----Throttle does not need to be open on a 2 stroke like yours !
 
racerone said:
Some want to argue.-----Warm or cold does not matter.-----Throttle does not need to be open on a 2 stroke like yours !
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ok so what would I look for with head off other then the rings and the motor only un 15 minutes is it long enough before a compression check?
 
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Do you have spark on all 3 leads, spark that will jump a gap of 3/8" or more , yes or no ?----Have you looked at the flywheel key ?
 
racerone said:
Do you have spark on all 3 leads, spark that will jump a gap of 3/8" or more , yes or no ?----Have you looked at the flywheel key ?
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I just went over where the boat is and think I found the problem its not moving the timing its real stiff so I soaked it with carb cleaner its moving better now thank you guys for all your help
 
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