1940 flathead spark trouble

Help !! 1940 flathead has little to no spark at the plugs when trying to start it but when i get it started the spark from the plugs are great. It has a rebuilt distributor (1 year ago) from macsautoparts and a aftermarket coil kit (1 year old). The spark comeing from the coil when i crank it over is great but not at the plugs until it starts the ballist resistor is byp***ed, the battery is charged

 

Are your condensors OK

Frenchy

 

Weak condensers give problems at the low rpms & idle so like Frenchy I'd check them first.

 

The condenser was new with the coil kit but i'll pick up another one to check if thats the problem

 

Try an IH-200 condensor from NAPA. That's what I use on my '40.

 

Got a new condenser and she started right up and the spark to the plugs looks much better when cranking thanks guy for you help flatheads for ever !

 

i always keep a few extra condensers around. there cheap and seem to go out unexpectedly