I have a 1998-1999 yamaha 225 hp salt water series. The gauges seem to work well except for the gauge which measures miles per gallon which seems to work intermittently, Any suggestions on how to fix this problem
are you dealing with a fuel level gauge or a fuel management meter?
and pick one thread you have running or the other this is the last time I chase it.
get the mods to lock one or the other.