I have a 1985 Merc 115hp inline 6 that cranks but won't start.The primer bulb pumps up fine,the engine turns over but it appears its not getting fuel to through the carbs.Pulled the plugs after cranking,they were bone dry.No smell of gas and no gas coming out of the carbs.I pulled the hose of the output of the fuel pump,cranked the motor and gas was getting that far.Anything other than the float needles being stuck closed cause this problem.I was thinking about pulling the fuel line off the fuel pump and giving the carbs a quick blast of air to see it that might unstick the needles.Any ideas other than pulling off the carbs and cleaning them.Thanks.