Morning folks. Some of you may have seen my travails in the ignition forum. Solved that now, but I do have a new issue...
Context for the car - mkIV 1300 with a Dolomite engine, rebuilt with a Kent TH2 fast road (at least it has the invoice for). Running 1500 SUs with ABT needles. K&N filters and an extractor 4 branch manifold. New fuel pump from Rimmer's. 123 distributor set to mkIV curve.
Starts nicely, idles around 800. Dynamically timed to 10° BTDC. Goes well under load all the way up to 4000 rpm, then it feels like the ignition is breaking up, or there's not enough fuel flowing.
Short shopping for richer needles, does anyone have any suggestions of things I can check/test first?
All the best