I freed up the heat riser valve a bit. Should you be able to turn it with your fingers?

I'll use a little bit of carb cleaner around the intake manifold ports when cold and then hot. I will wait for one squirt to evaporate before hitting the next intake port.

1948 3/4-Ton 5-Window Flatbed Chevrolet

34 Years. Now with a '61 261, 848 head, Rochester Monojet carb, SM420 4-speed, 4.10 rear, dual reservoir MC, Bendix up front, 235/85R16 tires, 12-volt w/alternator, electric wipers and a modern radio in the glove box.