Hi all,
1st thanks for all the suggestions with the carb, ended up with an Edelbrock 1409. Simple install, only had to drill out a hole in the existing plastic end of the throttle linkage and create a small custom fuel line from the fuel pump to the carb.
So today everything was buttoned up, checked the oil, put in new plugs, primed the fuel system and fired it up, well tried to fire it up. The timing was off a bit and after about 15 min of getting everything dialed it I could tell something was hurt. Pulled the plugs and did a quick finger compression test, the result, #2 was dead. Pulled the valve cover and it was a mess. The #2 exhaust valve was stuck open, the push rod was bent, and I could tell water got in the system. Each of the rockers had rust on them, mainly in the middle, and there was a light oil/water mixture everywhere. I rechecked the oil and it went from new and clean to mixed with water.
A little background, in the winter the boat had a cover over it but ended up having a leak right over the engine. The engine cover was not over the engine so water was pouring over the engine all winter. The flame arrestor was also off the carb (missing when I bought the boat). I pulled the head and it looked like #2 was full of water with the piston almost to the top. I assume it was in the exhaust stroke when it filled with water and seized the valve. The valve it not bent but stuck in place. The head gasket looked good, no breaks or indication anything went wrong.
I'm the 1st to admit I don't know much about marine inboard engines. There are water lines everywhere!!! Is the engine gone? It turns super easy, all cylinders move up and down freely with little effort when turning the crank manually. I need to take the head in but before going down that road I wanted to ask the experts here. The oil was clean but after hooking up the water muffs and turning the motor over for 15 min there was an oil and water mix. Not sure where it came from, it does not look like anything came from the closed system side, no drop in the water level so I suspect something was in the engine somewhere from the rain/holes in the cover or something came in from the fresh water side. The engine got a lot of water poured over it, we had a very wet fall/winter/spring.
What would you do? Worried about how the oil/water got mixed in. No cylinder cracks I can see, head gasket looked fine, lots of rust inside the exhaust manifold and the exhaust elbow, some pitting at the top of #2 but that was likely due to water from the rains (not sure how it got in on the exhaust side). What else should I check?
Another question, the exhaust elbow gasket to the exhaust manifold was solid and blocked off all water passages, I see the replacement online has one of the four passages open.
Thanks in advance of any and all help. I will post some pics in a little while, need to resize them.
Thanks!!!
1st thanks for all the suggestions with the carb, ended up with an Edelbrock 1409. Simple install, only had to drill out a hole in the existing plastic end of the throttle linkage and create a small custom fuel line from the fuel pump to the carb.
So today everything was buttoned up, checked the oil, put in new plugs, primed the fuel system and fired it up, well tried to fire it up. The timing was off a bit and after about 15 min of getting everything dialed it I could tell something was hurt. Pulled the plugs and did a quick finger compression test, the result, #2 was dead. Pulled the valve cover and it was a mess. The #2 exhaust valve was stuck open, the push rod was bent, and I could tell water got in the system. Each of the rockers had rust on them, mainly in the middle, and there was a light oil/water mixture everywhere. I rechecked the oil and it went from new and clean to mixed with water.
A little background, in the winter the boat had a cover over it but ended up having a leak right over the engine. The engine cover was not over the engine so water was pouring over the engine all winter. The flame arrestor was also off the carb (missing when I bought the boat). I pulled the head and it looked like #2 was full of water with the piston almost to the top. I assume it was in the exhaust stroke when it filled with water and seized the valve. The valve it not bent but stuck in place. The head gasket looked good, no breaks or indication anything went wrong.
I'm the 1st to admit I don't know much about marine inboard engines. There are water lines everywhere!!! Is the engine gone? It turns super easy, all cylinders move up and down freely with little effort when turning the crank manually. I need to take the head in but before going down that road I wanted to ask the experts here. The oil was clean but after hooking up the water muffs and turning the motor over for 15 min there was an oil and water mix. Not sure where it came from, it does not look like anything came from the closed system side, no drop in the water level so I suspect something was in the engine somewhere from the rain/holes in the cover or something came in from the fresh water side. The engine got a lot of water poured over it, we had a very wet fall/winter/spring.
What would you do? Worried about how the oil/water got mixed in. No cylinder cracks I can see, head gasket looked fine, lots of rust inside the exhaust manifold and the exhaust elbow, some pitting at the top of #2 but that was likely due to water from the rains (not sure how it got in on the exhaust side). What else should I check?
Another question, the exhaust elbow gasket to the exhaust manifold was solid and blocked off all water passages, I see the replacement online has one of the four passages open.
Thanks in advance of any and all help. I will post some pics in a little while, need to resize them.
Thanks!!!
