Thank you for you help in advance. I'm at a stand still. Here's what happened?
***** EDIT, It's a 1970 ******
At the beginning of last season my impellar went bad and the motor over heated. I replaced it, hooked up the water for a test and water came out of the water jacket around the spark plugs and ran terrible. If I removed the water it seemed to run ok. Of course no load and only for a second to see what happened.
I put the boat away for a year and started working on it again.
Tonight I tested compression... zero to 5 or 10 on the top cylinder... bottom cylinder 115. I put some marvel mystery oil in to see if I could get some compression. The top cylinder seemed to have even less compression using my finger. The bottom cylinder seemed to increase some (normal amount).
This is my first outboard. I'm not real familiar with the layout but I do know it doesn't seem to have a regular head. Just a water jacket over the top of a block which seems to be know as the powerhead from my research. I don't currently have a book or an exploded view to look at.
I thought maybe a sticking ring but nothing increased with the oil and I did slowly put rope in while it was rotating to make the piston "bounce" a little from the resistance. Old grandpa trick. If it gets cut or falls in just shop vac it out. I use rope to hold valves while changing them a 4 stroke as well. Didn't help.
I'll worry about the water jacket gasket later. I broke the top two bolts so I quite that mess. I'll goop it up if I have too but I'm thinking I have much bigger issues.
There's no knocking, pistons move good, turns over easily "without spark plugs" and oil doesn't increase the now about 0 to 10 psi I have in the top cylinder.
Please help!
***** EDIT, It's a 1970 ******
At the beginning of last season my impellar went bad and the motor over heated. I replaced it, hooked up the water for a test and water came out of the water jacket around the spark plugs and ran terrible. If I removed the water it seemed to run ok. Of course no load and only for a second to see what happened.
I put the boat away for a year and started working on it again.
Tonight I tested compression... zero to 5 or 10 on the top cylinder... bottom cylinder 115. I put some marvel mystery oil in to see if I could get some compression. The top cylinder seemed to have even less compression using my finger. The bottom cylinder seemed to increase some (normal amount).
This is my first outboard. I'm not real familiar with the layout but I do know it doesn't seem to have a regular head. Just a water jacket over the top of a block which seems to be know as the powerhead from my research. I don't currently have a book or an exploded view to look at.
I thought maybe a sticking ring but nothing increased with the oil and I did slowly put rope in while it was rotating to make the piston "bounce" a little from the resistance. Old grandpa trick. If it gets cut or falls in just shop vac it out. I use rope to hold valves while changing them a 4 stroke as well. Didn't help.
I'll worry about the water jacket gasket later. I broke the top two bolts so I quite that mess. I'll goop it up if I have too but I'm thinking I have much bigger issues.
There's no knocking, pistons move good, turns over easily "without spark plugs" and oil doesn't increase the now about 0 to 10 psi I have in the top cylinder.
Please help!
