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All the motors I have ever fooled with required valve adjustments to be made with the engines stone cold. I know there are some engines which require valve adjustment to be done hot, but I never had one. Since Volvo gives specs for both cold and hot tappet clearances, I always use the cold setting.
I just saw in the 700/900 FAQ's that a hot valve adjustment is recommended. Is there a valid reason to set the valves with the engine at operating temperature or is that procedure used just for the convenience of a repair shop?
Thanks,
Rich
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