22FZB

[bob46320]

My 1932 RN is pretty bog standard with a 22FZB mazac carburettor except that I have a 4 blade export fan.  Living in SW France, we get both hot weather and challenging roads.  Today,  its only about 14 deg C, but climbing a 6mile long hill in second for most of the way was a not an uncommon challenge.  Towards the top the engine started to miss a bit, but we made it and popped back into top gear and the engine cooled down a bit.  When the engine misses,  I am pretty sure its down to vaporisation. The radiator is newish, the head and block all clean,  ignition sounds about right but never been able to check the dwell angle of the points.

The RN has a front tank gravity feed that gets pretty warm from the engine heat.

Any ideas how to cure this ?
BobH