adjusting the mixture screw(s), ( you called them idle) with only alter the
idle curcuit. In fact, if the mixture screw fell out on the road, you would not
even notice until you got your engine below 1,000 or 1,00 rpms or so. Jet size
in the low 50's. Points adjusted correctly and octane solector at 0º, set
timing with a light on number one and align the steel ball up with the pointing
indicator. Get a tank of unleaded and advance the octane selector until you get
a slight ping. Exhaust valves set at .13 and intakes at .08. This will maximize
your gas dollars.
"G. Simmons" wrote:
> An original 216 or 235 has fairly low compression (7 or 7.5 to 1) so it
> should not be necessary to use premium gas. If that fixes the problem,
> either you got a tank load of bad gas, or more likely, it's masking an idle
> mix or timing problem. I'd try adjusting the idle leaner and adjust the
> timing before anything.
>
> Regards,
>
> Grant S.
>
> oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
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