I readjusted the valves today and I can report that I must have been in too much of a hurry when I did them last time. I found several needing better adjustment. I haven't had a chance to test drive yet, but I'm hopeful that this is the answer.
1946 Chevy pickup, 1948 Chevy suburban, 1950 Chevy pickup, 1952 GMC pickup, 1957 Chevy pickup, 1939 Chevy pickup
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