Question about 1983 Chevrolet Silverado
Check the timing and make sure the vacuum hose for the advance is not leaking or cracked. Also make sure it is plugged into the front of the carb at the base.
If the timing is dead on and there are a lot of miles on the timing chain, bump the timing ahead 1 or maybe 2 degrees to compensate for chain stretch. That may help.
It could also be that the vacuum advance on the distributor has started leaking and may need to be replaced. You cuold also try a tank ot high test or premium gas. That has been known to get rid of spark knock. Hope this helps.
Posted on May 05, 2010
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Posted on Jan 02, 2017
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