Korkie
Active Member
- Feb 2, 2016
- 1,329
- Boat Info
- 2006 340 Sundancer, Garmin 7610, xHD 24 Radar, VV703, SeaStar Hydraulic Steer, Shadow Drive AP
- Engines
- Mercruiser 496 Mags
Bravo III Drives
I know I have read about this several times, but like anything else - cannot seem to find it now. 496mag B3 drives 2006 340. Reference fuel usage. I used to cruise at 3250-3300 and that would put me at or around 30-31mph and burn according to the SmartCraft @ .9mpg Seems now (just this year), to maintain the 30, I am needing to run at 3400 and am burning .7mpg. Would new plugs be first thing to do? I didn't change them last season, but did the season before. I hear different opinions that I should get at least 300 hours out of a set, only about 100-125 hours on current set, others say less and still others change seasonally. Opinions from those with same/similar setup greatly appreciated. Only 3rd season with boat and love it. Learning to keep these motors at as close to 100% as possible is quite a learning experience. Thanks in advance.
