Tach guage not reading right and fuel consumption ?

Liquid Pleasure II

New Member
Oct 19, 2009
83
Lenexa, KS
Boat Info
340 Dancer 2003
260 Dancer 2001
Engines
Twin 496-mags, v-drive
My 2003 340 DA obviously has dual engines. The left tachometer usually always read 1100 RPM's. The Smart Craft monitor displays the correct tach. Do I need to replace the dash tach.

My starboard engine burns fuel at a higher rate than my port side to the tune of using 12 more gallons following a recent fuel fill to the same levels. I do not run my gen at all (rarely only to start it and let it run for 2-3 minutes so it doesn't sit all season without running. I do that about 1-2 times/month. What gives??
 

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