Pulled intake manifold. Manifold was on tight. Took me a while to get it off after i pulled all the bolts. I doubt water got in from there but...what the hell do i know. I can only take my best educated guess. All the ports which carry gas fumes down into the engine block are pretty well rusted. The camshaft and (rocker arms I think they are) that lead to the valves look ok. There was a bit of rusty gooky- shit in this area on one of the port side wall. I inspected the gasket to valve cover which is visible and it looked ok. Not sure where the crap came from.
Bad news now- i tried to decipher which ports were for water. Hard to tell when the whole damned engine is rusted. All i had to do was examine the ports on the intake cover to figure out where the gas fumes go! I can see the inside those ports into the engine block. I'm looking at some rods-push rods i assume. They have rust and gunk on them! I assume they connect to the pistons and that they should be clean...
!!
The port side has more rust buildup than the starboard because the boat tilts that way. That's where the water traveled and sat
I remember seeing alot of water on the manifold one morning after it rained. Then i got a scary thought that water went right in through the carb. Maybe at the time i was working on it and left the spark arrestor off. Don't think i'd do that...I dispelled that bit of negative thinking. I kept a pretty close watch on the boat after every rain. Inspected the carb anyway. Definitely some water in the carb bowl. A little bit. maybe 10% water in the bowl
Pulled fuel filter ...it's all fuel no water.
I want to figure out what caused this. Can i infer that it's like everyone told me...water in the head from the exhaust manifolds and condensation caused the intake manifold to form rust too.
At this point do i even need to think about starting the engine when i get my new manifolds or should i just order myself a rebuild?? I can crank it w/ a 9/16" socket and a ratchet no problem....
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