BSDenning
Petty Officer 1st Class
- Joined
- Nov 23, 2007
- Messages
- 271
Hello,
I've got a 1957 Evinrude Fastwin 18hp. I purchased the motor a few months ago after it had sat for 20 years or so. I rebuilt the carb and replaced the impeller. The motor has been running great ever since. Now the motor has suddenly stopped running good. It only gets about half power and it does not idle well. It spits and sputters and will not idle down without dieing. I thought the problem could be in the magnito, so I took the whole magnito plate off and replaced it with one from a different motor, but it ran exactly the same. It has good compression, 100psi in each cylinder. So, the only thing I can figure is that the problem is coming from a leak in the crankcase. You can see little bubbles of fuel leaking out from where the crankcase seals to the block. So, how do I reseal the crankcase? There is no gasket there. It is just metal on metal. Do I use some type of sealant? Or, should I just take it apart, sand it, and bolt it back together? Thanks.
I've got a 1957 Evinrude Fastwin 18hp. I purchased the motor a few months ago after it had sat for 20 years or so. I rebuilt the carb and replaced the impeller. The motor has been running great ever since. Now the motor has suddenly stopped running good. It only gets about half power and it does not idle well. It spits and sputters and will not idle down without dieing. I thought the problem could be in the magnito, so I took the whole magnito plate off and replaced it with one from a different motor, but it ran exactly the same. It has good compression, 100psi in each cylinder. So, the only thing I can figure is that the problem is coming from a leak in the crankcase. You can see little bubbles of fuel leaking out from where the crankcase seals to the block. So, how do I reseal the crankcase? There is no gasket there. It is just metal on metal. Do I use some type of sealant? Or, should I just take it apart, sand it, and bolt it back together? Thanks.