Yes , an old fuel line could be causing "VAPOR LOCK" but afew other things you need to check is 1 take the muffler off and see if the exhaust port is plugged or restricted at all. Also see what condition the piston and cylinder walls are in. 2 check the crankshaft seals,one behind the clutch/sprocket and one behind the flywheel. and 3 check to see if the cylinder gasket is leaking, and also the intake and insulator gasket behind the carburetor. mk.farnam@gateway.net
------------------
