I had a curious problem like that with an old Morris J van back in the 60s.

It cut out every time we went up a long hill. It turned out to be an exhaust gasket leak at the manifold exhaust pipe junction. It was directing hot exhaust gas onto the fuel line. I actually went up the mountain backwards at the Bathurst race circuit, much to the bewilderment of the others in the traffic going up and the cop who was standing at the hairpin. Naturally I managed to fix it before driving back to Sydney laugh

Peter

[Linked Image]