Posted by Steve@Advance on December 03, 2020 at 04:54:25 from (66.169.147.211):
In Reply to: Farmall 400 Update posted by super99 on December 03, 2020 at 04:22:05:
Black smoke it is rich. Does disconnecting the air cleaner change anything?
When does it black smoke, idle, under power, both? Does it drip gas if the fuel is left on not running?
Blue smoke on start up is valve guides. Blue smoke under load is rings, but need to get the fuel right before making decisions about repair.
Is the main jet adjustable? If so turn it in until it won"t take sudden throttle from idle without stumbling, then start backing it out 1/4 turn at a time until it will. You can load the engine with the hydraulics, curl the bucket and hold it, just don't do it for very long.
If it still black smokes with the main all the way in something is still wrong with the carb. If nonadjustable main it may have the wrong jet.
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