Originally Posted by scubbydoo80

Ok, I will do my best to cover all questions asked on this one:

There is no rubber fuel line on this motor.

Originally Posted by Knot 4 Me

You have hard line from the tank to the fuel filter housing?

Originally Posted by scubbydoo80

I have a 1991 Powerquest Enticer with twin 454 330hp motors. The Port side keeps cutting out at W.O.T. it looses power after about 4-5 seconds wide open.

Heres what I have done:
1. Rebuilt both carbs and switched side when I reinstalled.
2. Replaced Fuel pump on Port Side. Starts quicker but still cuts out.
3. Had it out tonight and thought I would check for arcing on spark plug wires. Found Port side coil wire would arc when grounded. Switched it with the STBD took it out, STBD is fine and PORT still cuts out.

Now the motors run great as long as you are not wide open.

Not sure where to go from here and I hate changing parts for no reason what so ever. Any suggestions would be great at this point.

Thanks in advance.

Originally Posted by scubbydoo80

Well everyone, thank you for all your help.
The problem was the good old anit-siphon valve. When I took it out it appeared to have paper towel residue in it. I clean it out, reinstalled, and now WOT is no problem. Wish I would have know about that from the begining. At least now I know my whole fuel system is in perfect running order.

Thanks again!!!!!!

Originally Posted by johnny b good

Check the anti-siphon valves that go in the fuel tank pick up mine clogged up with junk a few years ago, and engine would run great up to about 4000k than start surge and fall back.