Quote:
Originally Posted by Dead Parrot
850 for idle speed is a bit high. Try slowing to 700 or so. What is your timing set at with the distributor vacuum advance disconnected?
Was a non-resistor 12V wire ran to the HEI distributor?
Check the suction lines on the fuel system. A small hole from rot or mice can let air in and mess with fuel flow.
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I will look at these things. The HEI was already installed when I bought the truck in late 2016 and has always had an idle problem that got better after chasing vacuum leaks and tune-up but has never been perfect. I never thought to check for non-resisted power.
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