Thank you all for the replies,
I’ve decided I am going to sort the leak around the exhaust manifold and then check again for any air leaks around
the carb manifold crankcase doors and transfer ports, as I think this is the most likely source of the problem.
I’m confident the electrics are OK, they have all been renewed and checked and checked again, distributor bobweights, points, condenser, timing, everything !
Carburettor seems in good condition too, so I’m going to start by looking for air leaks when I get a chance.
I’ll let you all know how get on !
Many thanks, Mark
