1st question: Did it used to rev up to max rpms (about 3600) in gear before, (ie last summer, earlier this summer). If so, then I would definitely make sure the bottom / keel is clean of growth, and the prop is free of growth and rope, etc, before pulling out injectors or exhaust elbows.
Sounds like a classic case of the engine being overloaded, likely due to growth. That does expaling why it doesn't do it in neutral - no load in neutral.
If the boat has never been able to obtain max rpms in gear, I would see if it is overpropped, or then start checking out the other engine / exhaust stuff.
Sounds like a classic case of the engine being overloaded, likely due to growth. That does expaling why it doesn't do it in neutral - no load in neutral.
If the boat has never been able to obtain max rpms in gear, I would see if it is overpropped, or then start checking out the other engine / exhaust stuff.
