Jesse, The mechanic
had to increase idle speak to like 1200 just to get her started. After rebuilding injectors, we lowered the idle speed down to 750.
SkiprJohn, Yes, cannot get engine above 2000 in neutral nor gear
. The engine runs great. For what it is (Diesel), it runs fairly quiet. When going between one or the other, the engine behaves normally.
When we installed the new muffler
, we did not look at the mixer elbow. I will look into that.
The boat does have a water heather but I have not checked to see how the water is running. I will look into that.
I will also check the exhaust hose between the mixer and the muffler.
I am thinking that replacing hte Heat Exchanger may be an alternative....thoughts?
Oh BTW, I do appreciate everyones help and ideas with my problem.