Have a '47 Cub that is stumping me...
She's always been a bit hard to start especially when hot but now it won't start at all. I can get a few puts but no hard fires and definitely not two in a row to get the engine to take off.
Carb. is a Zenith; Was running lean so I tore it down and found some gunk -- cleaned out and reassembled. I'm now getting good fuel (after cranking on choke I get the usual Cub dribble of gas out the intake.)
Spark was questionable so went through the mag -- new points, new condensor, cleaned rotor and cap contacts. burnished new points with emory cloth since they had been on the shelf a while and then cleaned them off with contact cleaner just to be sure of a good surface with no oil. Coil is only about two years old (since installation anyway.)
I'm still only getting a marginal spark at the plugs -- faint, blue but not very fat.
Time for another new coil? I've heard that J4 magnets can get weak -- is this true? Is there a fix? Am I missing something?
Thanks in advance,
Pete P.
Harborcreek, Penna.
She's always been a bit hard to start especially when hot but now it won't start at all. I can get a few puts but no hard fires and definitely not two in a row to get the engine to take off.
Carb. is a Zenith; Was running lean so I tore it down and found some gunk -- cleaned out and reassembled. I'm now getting good fuel (after cranking on choke I get the usual Cub dribble of gas out the intake.)
Spark was questionable so went through the mag -- new points, new condensor, cleaned rotor and cap contacts. burnished new points with emory cloth since they had been on the shelf a while and then cleaned them off with contact cleaner just to be sure of a good surface with no oil. Coil is only about two years old (since installation anyway.)
I'm still only getting a marginal spark at the plugs -- faint, blue but not very fat.
Time for another new coil? I've heard that J4 magnets can get weak -- is this true? Is there a fix? Am I missing something?
Thanks in advance,
Pete P.
Harborcreek, Penna.