" I have two 3.0 4 bangers in
" I have two 3.0 4 bangers in my chris craft 25. One will run up to 4200 rpm and the other only 3000 rpm. I Checked timing and corect firing order on both engines to be to spec "6 btdc" "1432 order". Checked each clyinder compresion. The good engine clyinders range 100-145 psi, the lacking engine is all 150 psi on all four. Electronic ign on both engines, good sparks. Both idle well. Both run the same temp. These are raw water cooled, running in saltwater.
Both throttle plates open all the way, chokes off at temp. Same gas. All new fuel filters and pumps.
Any Ideas?, I will try swapping the carbs tommorow and see if the problem goes to the good engine "
" I have two 3.0 4 bangers in my chris craft 25. One will run up to 4200 rpm and the other only 3000 rpm. I Checked timing and corect firing order on both engines to be to spec "6 btdc" "1432 order". Checked each clyinder compresion. The good engine clyinders range 100-145 psi, the lacking engine is all 150 psi on all four. Electronic ign on both engines, good sparks. Both idle well. Both run the same temp. These are raw water cooled, running in saltwater.
Both throttle plates open all the way, chokes off at temp. Same gas. All new fuel filters and pumps.
Any Ideas?, I will try swapping the carbs tommorow and see if the problem goes to the good engine "