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Re: 1972 Cheyenne 350 Engine problem
Put about 12 gallons of 93 octane in yesterday and drove about 10 miles. The light throttle ping is gone, but it still is sick if I try even medium acceleration.
Still smooth idle, normal starts, normal temperature and good oil pressure.
Is there a heat riser on a 72?
Could a weak coil or failing Pertronix module cause this?
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