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Re: need help with 84 caprice
Do you know if someone had tried to adjust the valves?
If someone messed that up and made the adjusting nuts too tight that will cause it to not idle well and to make poor vacuum for the power brakes.
There is a LOT of bad information out there about adjusting valves. MANY resources say "spin the pushrod till you feel resistance then add preload" but in reality by the time you feel resistance at the pushrod the preload is already too tight.
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96 Caprice Medium Garnet Red
11.56 at 115.9mph naturally aspirated
94 Caprice wagon, rotted out POS
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