Pro-V 200 Rough When Heats Up

[tubezilla]

I have a 97 Pro-V 200. Motor started to hesitate at top end and would only rev t0 4800 rpm and started to run rough at all rpm almost like a cylinder dropped. When I pulled the plugs and changed them it looked like one was washed. I tried the boat again and it ran real well for the first 15 min to 30 min and then the same thing happened again. It started to worsen to the point it would hardly get the boat on plane. I am assuming it is only happening when it heats up. Any ideas? I did not let it cool down and try again to run it but I am assuming it will do the same. The motor always starts and idles fine (idles rougher after heating up)

Matt

[citabriatom]

Sounds a lot like you have a bad fuel pump diaphram that's leaking fuel into the crankcase.