Cleaning a dusty carb.

Took it out for a good run this morning. Under load is fine, but coasting it stumbles and backfires thru ds exhaust. Drained about 25 litres of fuel out. Nothing really stood out to me as the fuel going bad? I always run premium and add seafoam every once in a while.
Next I will take Eddy off and blow air thru fuel line from mech. fuel pump back, remove carb and inspect.
Pull plugs (new Autolites) and inspect.
Pic is 1st container of fuel to drain. I hawked a big loogie in it after inhaling some gas.:BangHead: Other than the loogie it's pretty clean.

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