Just bought a 1999 Glastron 195sx with Volvo Penta 5.0GL. Boat is a repo but only has about 25 hours and like new condition. Boat started and ran great on hose at lot yesterday but got it to the lake today and it will not start. Motor turns over strong, good fuel spray in carb, and good spark on a removed spark plug. I thought the gas may be bad so I disconnected the fuel line and tried to start with some fresh gas poured in the bowl. The engine doesn't even fire. Any ideas what else to check. I can't figure out why the boat doesn't even try to fire when it is getting gas and sparks seems good. Thanks in advance.