Rick Young
Member
We have a 2007 320DA with twin 350 engines and V-Drives. Last fall the starboard engine would not run up to full RPM like the starboard engine. Both engines seemed to run fine at lower RPM's. We thought it might be electrical as we were to the point of needing new batteries. All four batteries were recently replaced and we took the boat out this past Saturday to see if that corrected the problem and it did not. At WOT the starboard engine still ran approx. 700 rpm slower than the port engine. I will be replacing the fuel filters next as part of my annual spring maintenance program so I am hoping a dirty filter on that side may be the problem. Any other thoughts and what else I might take a look at as a cause for this problem?