THE OPERATOR
Cadet
- Joined
- May 10, 2011
- Messages
- 24
I have just purchased a 19' polar fiberglass boat with a c90tlrv yamaha 2 stroke on it. I have ran a compression test and come up with 100-105 psi on all three cylns. I also ran a spark test and with a 7/16 gap and got a strong blue spark. I sync. the carbs and the linkages and also used a dial indicator to get TDC of #1 to set the timming mark and set the ign timming to 8 degrees atdc. The boat has a new fual tank and fuel line with inline filter. fresh non-ethinol 50:1 mix. It will start up great and idle well no caughing or sneezing. When i put it in the water I can not get it to come up to WOT in fact the boat will not even get up on plane. any ideas please!!!. and P.S. I have a rapture SS prop 13-1/4 X 19 on it and the keel is aprox 1 to 1-1/2 inches above the bottom of the boat.