Hi, recently moved to Worcester and due to pandemic and moving not really had chance to sort my Herald engine. Car is fully restored, recon g/b, diff and rebuilt engine. Spent far more on car than it is worth.
I cannot get the engine to run smoothly and despite building 3 mini engines in the past I am baffled by the Herald issue. The engine starts, but backfires a lot and bucks about on its mounts and then eventually stops after a few minutes running. Checked timing and appears to be spot on at TDC. Stripped Stromberg carb so many times it is now leaking petrol but nothing on the carb side seems to resolve the issue. It has Accuspark electronic ignition and coil but I seem to remember it also did the same thing on the original coil and dizzy. Have also refreshed petrol as I suspected it had gone stale so have counted this out as an issue.
Anyone has any ideas as to what the issue is or is there a Triumph expert in Worcester who can help. I cannot drive the car at the moment as far too unreliable and no pull from engine.