Sundancer280
New Member
- Sep 7, 2021
- 29
- Boat Info
- 2005 Sea Ray 280 Sundancer Twin 4.7 Mercury Engines
- Engines
- 4.7 Mercury Twin Engines
Alright I got a good one today. So after getting on plane, my 05’ sundancer 280 4.3L will run perfect for a solid 5 minutes. I would be at a cruising speed (30 mph) with about 4K rpm’s for each engine. A few minutes later, I’ll start to see a drop in rpm’s in my left engine, and will drop to about 3.5k rpm. The only way I could stay cruising at that point is having my left engine run at 3.5k rpm while my right engine run at 4.5k rpm. Otherwise the boat will have a hard time running. What the heck is going on here and why isn’t my left engine running over 3.5k rpm after running 4-4.5k for about 5 minutes just fine.