Dday and I have a 25 HP Johsnon seahorse (1980, I think). She stalled on the lake the other night. At first, she ran real well, then two weeks ago on the way in I opened her up and she wouldn't go more than 5 MPH. I changed the gas and the plugs. The next time I had her running, she opened up and then the same problem happened again. It just doesn't seem like it's getting gas where the gas needs to be. I am guessing that either there is a leak in a fuel line and she is drawing air, or the fuel pump is not properly working. Any advice would be greatly appreciated.