New Addition-1989 WA Family Truckster

[CaptLloyd]

After getting some wiring and bilge pump issues worked out, I was able to take it out for a little shake down cruise on the Banana River. The boat came with a Floscan, just needed the ground for the sensor connected. The motor is a 1990 200HP Mercury Offshore w/ 3 blade aluminum 15X17 prop.

RPM MPH/KT GPH MPG
5600- 38/33- 21 1.8 (WOT)
4800- 32/27- 13 2.4
4500- 30/26- 12 2.5
4000- 25/22- 10 2.5
1500- 7 / 6- 3.5 2.0 (Trolling speed)

That was with about 40 gals of gas and just the family onboard. Gets on plane nicely, but I think I can detect the prop slipping while coming up on plane.

The motor runs a little rough at low speed, but is smooth as silk at cruise speed. Could be that I've gotten so use to 4 strokes, that I'm being too sensitive. I haven't done a compression check, but I pulled the plugs, and they all looked identical. Any advice from you Merc guys on what I need to watch for on this motor is greatly appreciated. The oil injection has been removed and the gas gets premixed.

Lloyd