[JKTrevecca]

Wide Open Throttle one second, dead the next after a rapid steady decline in RPMS. I can't tell if my issue is the result of oil/fuel starve or overheat but after getting home, I confirmed 120 PSI bottom cyl, 110 Middle cyl, and 30 top cyl. I took off the head and here is what I found. Does this look like an overheat situation to you guys (Paging TK Walker.... Paging TK Walker...) or an oil starvation situation? Trying to decide whether to rebuild or get a reman powerhead. I'm not afraid to rebuild it myself I just don't know if it will be worth my time and effort and money or if I can get it done in less than a week compared to a reman powerhead off ebay. Any thoughts? The model # is 90ETLJ. The overheat alarm was disconnected a couple years ago because it was going off all the time as a false alarm. STUPID STUPID STUPID.

It did, after sitting in the water for a little while, start back up but ran TERRIBLY. I used the trolling motor to get home and barely had enough battery.

It does look to me like the cyl isn't scored so much as the piston melted and welded itself to the cyl wall. It looks like metal on top of the cyl wall vs. a groove into the cyl material itself.

What all would be involved in this? Would I rebuild just the top hole or all 3? (PAGING TK WALKER) A reman powerhead on ebay is 1k - 1.3k based on a quick 30 second search. I haven't dug in any deeper yet.

Somebody tell me what to do!!!! (TK WALKER) Please!!!! I am determined to have this fixed before the end of the day Saturday 4/16. I have a 3 day fishing trip planned beginning Sunday. Any and all advice is welcomed. Thank You! Pix attached.