PierPressure wrote:
I was out at the lake this weekend and throttled both engines up. Port Engine was reading around 3800 rpm (wasn't quite wide open) but the starboard engine was only showing 2000 rpm. I was tracking straight, so I don't believe that gauge was right. Am I right to assume that something is wrong with the RPM Gauge?
An engine going 3800rpm and an engine going 2000 rpm should
sound vastly different. If they sound the same, it must be your tachometer (RPM Gauge). If things sounded pretty normal while cruising, try pushing left engine throttle forward and listen for it's sound to be at a higher pitch (rpm). Return to normal and then do the same thing to the right. If each engine sounds like it can be set to a higher rpm than the other...then that should confirm that the problem is the tachometer.
Ray
_________________

"Knot Easy" 2000 Horizon 240 Volvo 5.7GS /SX
tow: 2017 Honda PILOT EXL-AWD
prev. boats:
'87 Chaparral 198CXL 4.3 OMC Cobra
'69 Jetstar 16ft Ski Boat, 115hp Yamaha
'68 Aluminum Jon Boat, 3hp Sears
'64 Water Wings