I'm looking at buying a boat with a 2001 Yamaha 200 HPDI. The price seems good for $3800. The problem is the motor won't start on gas. I did a compression test with the motor cold and all cylinders were 95-100 psi except the bottom right cylinder was 85 psi. Outside temp was around 85 degrees. We ran the motor on starter fluid for 10 seconds and then tested the bottom right cylinder and it came up to 95 psi. Then tested the cylinder above it and it was 105. The motor acts like it wants to start. The price is good but I'm worried I could sink a lot of money in the motor. My feeliing is it is filter or pump related. What is your opinion on the compression test and health of the motor? Should I stay away from this motor? Thanks!