Power loss 200 Mariner

Hey guys, just wanted a few opions on a problem I'm having. Took the V20 out last weekend...ran her for about 20 minutes @ 3200-3500 rpms. All of a sudden she died...sounds like fuel issue. Attempted to start over and over, would not start unless throttle was aplied in neutral, release throttle and she would drop to around 500 and die. Let her sit for about 5-7 minutes and she started right up...rough though. Just replaced the fuel pump so it isn't that. The previous owner recommended replacing the water pump, could a bad pump cause this loss of power. Also checking the tank vent. Thanks.

Sorry, forgot to mention power is a 200 Mariner EFI.

[macojoe]

Could be a host of stuff!!

filter clog, screen in tank cloged, is the ball staying hard?? Do you have a water seprator?? when did you change it last??
Water in the gas??
Carb rebuild?

Someone here might be able to help better then I?? I no my own boat and I can trouble shot it but with out noing your boat and when you last did all your maintance makes it tuff!

You could try Iboats, they have a lot of great people over there and its free!! They have helped me alot in the past!!

http://www.iboats.com/cgi-bin/ubb/ultimatebb.cgi

Good Luck!!

[Seacrets]

MJ nailed all the fuel problems.