Someone wrote with problems with the 34 PICT/3 carburetor on his 1600cc twin-port engine (new manifold boots and gaskets, new plugs and leads, 009 centrifugal-advance distributor). I have read lots on the common “flat spot” problem (stumbling at low-rpm acceleration) and have tried the adjustments, but I still have the flat spot. I have opened up carburetor and checked the float, needle valve and seat — all okay. I also cleaned and blew out all visible rubbish. The motor seems to idle okay, but it spits and coughs when accelerating. If I up the size of the main jet and idle jet by one size or two will this help?
Parts you might need - link to category Ignition System
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