On Sat, 19 Jul 2003 17:37:29 -0700, "Nancy"
wrote:
Quick update

Irritating!! Even after replacing the filter in the carborator the problem
is still there and acts exactly the same... Port engine runs great for the
first several hours, then it starts cutting out as if it's not getting
enough fuel. This time I know I had enough fuel in the tank, so I know it's
not related to that. Out of a 100 Gal tank, I added 20 gallons when the
problem started up, and it continued once we were back under-way. Fueled up
right away and it only took another 35 gallsns, so I'm sure it's not related
to the amount in the tank.

Have had a couple of people suggesting possibly the coil or other ignition
parts. I guess that may be the next thing to try, a complete tune-up and
see if that takes care of it.

Any other ideas?
===========================
I had a problem with my port side engine several years ago that was
somewhat similar. It turned out to be the coil which was flaking out
after running at speed for a while. Everything was OK up to about
1800 RPM but would not go higher until things cooled down. Other
possibilities in the same area are the ballast resistor, or maybe the
distributor cap as Chuck pointed out.