HO 200 problem!

[Principal]

I have 2003 HO 200 hp that acts as if it is runing out of fuel after it runs about 1 to 2 minutes at full throttle. I am at wits ends about this motor. There have been no alarms and no codes showing that there is a problem. I have had a mechanic replace the fuel bulb, put a new fuel rail on, replace the battery, check the fuel water seperator and it continues to die after running about 1 to 2 minutes at full throttle, after a fuel rail was replaced it ran as well as it has ever ran a week ago, but this morning it it did it again and would not start. Any advice would be appreciated.

[Bassmeister]

Sounds like a fuel restriction to me. Checked the anti-syphon valves?? May need to hook a piece of clear line @ the engine with a vacumn gauge tee'd in and look for high vacumn or air bubbles.

[Danrude]

+1 on the anti-siphon valve in the fuel tank. If you have access to a portable tank you can hook it up to the engine and determine where the problem is.

[Principal]

How do I or can I manually check the anti-siphon valve?

[Danrude]

Most people just knock the ball out of it! I would try that and if it solves the problem then you can leave it that way or install a new valve.

[SANTEE]

The next time it stops, try priming the bulb again and see if it will run for another couple of minutes. Mine did this and it was the fuel/oil pump. Just something to try.