rpms low

Hello, quick question—05’ 28 ft sundancer— I’ll get the boat on plane just fine and about 5 minutes later, the port side engine will drop from 4K rpm (cruising speed) down to 3.5k rpm’s and won’t let me go over that even if I push full throttle, it cuts off at 3.5k. In order to keep the boat on...

This is a 280, with twin mercruisers. The port engine is having the problem, the starboard is fine. Here are the symptoms of the port engine: - Starts fine - Running up to 1,500/2,000 rpm, fine - Accelerating to get on plane, around 3K - will run fine for about 20 to 30 seconds - then the RPM...

Need some help here. I have a 2008 310 Sundancer with 2 x 350 MAG MPI 5.7 Mercrusier engines. I just changed the manifold and exhaust to fix the overheating problem and here comes another issue which never happend before. When I speed up the throuttle, I heard a beep from computer and then...

This afternoon our 2000 310DA with V-Drives gave us some trouble on the starboard side. As we throttled up to cruising speed the starboard engine RPM maxed out at 3000rpm before the boat even came up on plane. We could advance both throttles, and the port side would continue to increase the...