Post
by christopher storey » Sun Mar 08, 2015 10:44 am
No, I meant, as I said, the contact breaker points gap . The static timing I gave, as it turns out from Andrew's data, was as near correct as makes no difference ( 6.5 degs BTDC is correct ) . Has this really been "done already" if you have been swinging the distributor back and forth ? A timing light helps , but it is really only any use if you know the basics. It is worth checking the distributor to see that the mechanical advance weights are not stuck, but the black smoke points almost inescapably to a carburetter problem. The Ford Zephyr is a completely different type of engine, with greater capacity , rather higher revving, and much more modern in design , with nearly square dimensions rather than being heavily long-stroke as is the A70 unit. I think it is unlikely that the carburetter will be suitable for the A70 without re-jetting and in particular , possibly a smaller venturi size , 31 being correct for the A70
Don't force anything in the carburetter. I suppose that a blockage in the jet tube is a possibility, but I would think this would cause weak rather than rich mixture, unless the blockage is in the compensator jet, when it could have this effect. If the fixtures will not come out of the carb easily, then you could try giving it an immersion in very hot water with some reasonably strong detergent ( near boiling ) for perhaps half an hour, and then try again
