The PWC had been ridden in the morning, sat for about 2 hours, then wouldn't start. Gave a shot of starter fluid which generally works but it wouldn't fire. The starter is turning over and I verified spark. Checked the intake and impeller and don't see anything which might be seizing it up. Gonna try adding a small amount of oil/gas to the cylinder but am skeptical as the starter fluid wouldn't cause it to fire. Any suggestions are appreciated. Thanks!