I'm having some trouble with the 1990 GT-150 on my 1990 Champion. I do not have model or serial number off hand but will post them when I get home from work.

The motor will idle well on a hose, but will not idle in the water without holding the gas down. The boat has trouble getting on plane, and when I step on the gas, the motor either dies or will rev to about 2000 rpm and hang. When it gets to 2000 rpm, I have to trim it up to increase the revs, and once it gets over 2300 rpm, it will spin up and will get on plane.

The fuel bulb often needs to be pumped. I have replaced the fuel line from the motor to the gas tank and it hasn't helped. Also, pressing the choke does not immediately cause the motor to "wake up."

My mechanic (who is currently 250 miles away) suggested that the motor is either missing on a cylinder (which seems unlikely given my experience with V-6 and V-8 Chevys that have had loose or crossed wires) or that the intermediate jets on my carbs are clogged.

Any suggestions?

THanks!