Alex F
Well-Known Member
- Nov 14, 2006
- 9,166
- Boat Info
- 2005 420DB with AB 11 DLX Tender, Raymarine Electronics (2x12" MFDs) with Vesper AIS
- Engines
- Cummins 450Cs, 9KW Onan Generator, 40HP Yamaha for tender.
Granted that 100% operational cooling system is a must for the engines and I always try to keep mine that way. However, I’m a bit puzzled about performance differences when the row water intake is slightly clogged. Here’s what I mean in details. While using the boat for the past couple of weekends we happened to pickup some sea weeds in the strainers and when this occurs the boat performance changes right away. Here’s what changes:
Thanks,
Alex.
- There’s a light white smoke coming from exhausts.
- At the same RPMs the boat would loose the speed (about 1-1.5MPH).
- The engine sound slightly changes.
- In general we feel that the boat has a “heavy” ride.
- However, the good indication is that TEMP gauge show the same normal operation temps.
Thanks,
Alex.