2003 225 four strokes

[finaddict4]

Electronis gauges starting reading half of the actual speed (13mph instead of 26mph). also in economy mode started reading half the actual total burn rate(.8gph instead of 1.6gph).Individually the port and starboard engines were reading .8 each. Any Ideas? Thanks Bill Berg

[boats.net]

Probably the speedo pickup hole in gearcase is plugged up, needs to be cleaned.
SpeedoPickup.jpg