Superjet running hot and turning off?

[MaxWalker99]

My ski has been riding pretty bad after like 10 mins in the sea(only seems to happen in the sea?) and on WOT starts to struggle and sound rough and then it will die if i keep riding it, after shutting off a lot of smoke comes from the pissers and the engine and pipe are very hot, could this be a b pipe adjacent problem or something else ? ( the passers don't have much water flow , the pisser that has the stinger attached barely has a consistent stream of water coming out on throttle)

Ski had typical b-pipe and head setup.

Thanks for reading if you got to this point ahah

 

[Jr.]

You have a cooling clog? Its getting hot enough that it is starting to seize, and turning off.
This needs to be cleared before you attempt to ride again? Start with a back flush and see if it
Dislodges the clog? If it doesnt? Start at the pump end and start removing water lines to find the physical clog?
Compressed air helps? Always blow against the direction of water flow.

 

[Quinc]

Check over everything. I chased a cooling issue for a while before I found the npt fitting at the pump was broken and it wasn't until I got the hose off that I was able to tell.

 

[john zigler]

Could also be a blown head gasket, or o-ring if you have an aftermarket head.

You may have already done engine damage, and may need a rebuild.