Your white smoking under no load over 1500 rpm is an indication of the automatic advance not advancing far enough or static timing too late. Need a window on pump to observe automatic advance while running. Fuel pressure is critical on that which would mean you have to have a full flow of fuel to pump through clean filters for starters and proper fuel pressure which is adjustable on those pumps. Lot easier to check than nozzles and very little expense. Realize of course those engines are prone to slow cleanup of exhaust expecially if they still have the low compression pistons in them and possibly valves have been ground to lower valve protrusion and of course comp ratio.
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Today's Featured Article - Harry Ferguson - The Man & The Machine Harry Ferguson was christened Henry George but every one called him Harry. Harry was born in a small Irish town called Growell in County Down about 16 miles from Belfast. Harry Ferguson led a varied and colorful childhood causing mischief where ever he could. He showed mechanical aptitude at a very early stage in life and showed no inclination towards
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