Quote:
Originally Posted by Diesel911
Runs good cold and not hot could be Valve Clearances that are too tight.
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What is the reason for this? The valves on my 300D was not adjusted for over 30+K and was out of spec big time ( too tight ) and it ran good during cold start. Now I adjusted it properly and it runs rough for a little while in the morning or stalls if I do not press the pedal. Is the valve adjustment meant to compensate for the metal expansion? You explanation is appreciated.