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Old 08-18-2020, 08:30 AM   #14
Old Truck Man
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Join Date: Feb 2014
Location: Pocahontas Arkansas
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Re: 1966 Inline 6 250 ci. Nightmare!

the stock points dist is marginal when new. convert to a HEI. pull all the plugs and put air pressure in the cyls with both valves closed. you might have a blown head gasket between two cyls. I would also suspect a vacuum leak. maybe at the intake manifold and cyl head?
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