So i have a 87' 340 sundancer with 350 crusader 454's.
Currently have both engines running off the port tank so I can burn off old fuel. Both engines run great but once they are nice and warmed up after 30 minutes of driving or so, the starboard engine starts to stumble and fall on its face ONLY WHEN IN GEAR. When I put it back in neutral, it will run fine and I can rev the engine no problem. When I put it in gear, it will usually run a few seconds and then start stumbling again. Always immediately restarts no problem, and when I let it cool down, it runs great again until it gets to operating temp.
Could this be vapor lock related since I am running both engines off the same tank? Is it possible it is not getting enough fuel when in gear because it is having to draw fuel a longer distance and it subsequently gets hotter than the fuel going to the port engine? Or would this be carburetor related?
Currently have both engines running off the port tank so I can burn off old fuel. Both engines run great but once they are nice and warmed up after 30 minutes of driving or so, the starboard engine starts to stumble and fall on its face ONLY WHEN IN GEAR. When I put it back in neutral, it will run fine and I can rev the engine no problem. When I put it in gear, it will usually run a few seconds and then start stumbling again. Always immediately restarts no problem, and when I let it cool down, it runs great again until it gets to operating temp.
Could this be vapor lock related since I am running both engines off the same tank? Is it possible it is not getting enough fuel when in gear because it is having to draw fuel a longer distance and it subsequently gets hotter than the fuel going to the port engine? Or would this be carburetor related?