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Hello,
I am new to this forum n boating in general..
I have a 1977 Evinrude 75 model #75743s ,it has gone under water once..
The problem i am having is it starts fine , n will accelerate to wot, for a min or 2 then will sputter n miss n die right down, if i back off throttle sometimes i can keep running , n continue on but not wot.. .. After that it does not like to idle down low it seems it is firing on 1-2 cylinders.. I watched many vids on you tube, n have taken carbs off with mechanic friend, n they were nice n clean..
Upon checking compression, we found top cyl-150 psi middle cyl-140 psi n bottom cyl 150 psi.. when we removed spark plugs they were nice carmel brown but had lil beads of moisture on them, y mechanic friend, seems to be sure it is head gasket.. I have read many articles on this forum n have also seen bout possible exhaust port gasket failure..n warp... Any advice n guidance would be greatly appreciated... Thank u all for your time...
Rocky..
I am new to this forum n boating in general..
I have a 1977 Evinrude 75 model #75743s ,it has gone under water once..
The problem i am having is it starts fine , n will accelerate to wot, for a min or 2 then will sputter n miss n die right down, if i back off throttle sometimes i can keep running , n continue on but not wot.. .. After that it does not like to idle down low it seems it is firing on 1-2 cylinders.. I watched many vids on you tube, n have taken carbs off with mechanic friend, n they were nice n clean..
Upon checking compression, we found top cyl-150 psi middle cyl-140 psi n bottom cyl 150 psi.. when we removed spark plugs they were nice carmel brown but had lil beads of moisture on them, y mechanic friend, seems to be sure it is head gasket.. I have read many articles on this forum n have also seen bout possible exhaust port gasket failure..n warp... Any advice n guidance would be greatly appreciated... Thank u all for your time...
Rocky..
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