Hello Dave. Thanks for the response. I should have mentioned that I replaced the accumulator with a new one. I had to replace everything from the tank onwards. Had the tank refurbished, new accumulator, new pump, all new lines, new filter, new injectors, new injector lines.

I have noticed something new when working recently though...when I do get the car to rev, the exhaust gets much stronger in smell, making me think that it is burning rich. I do wonder if the fuel distributor may be the problem because it is the only thing left in the chain, but it is strange that it seems to be giving too much fuel. I would have expected starvation. Maybe it is an air thing, but I can't think what. New air filter, and, last time I looked, no rodent nest or anything weird. Perhaps it is worth taking another look on the air intake side?