Valve guide seals sticking on 156? - Alfa Romeo Forum
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Help Valve guide seals sticking on 156?

My Autodelta turbocharged 156 puffs out a bit of blue smoke when I stop in a traffic queue with the engine warm. This is only intermittent so I wonder if it is a vavle guide seal sticking occasionally and allowing oil from the head to be sucked into the cylinder? Or is it something more serious? Just failed the MoT on tickover CO levels too.
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If the puff of smoke is after it has sat idling it suggests either valve stem oil seals or valve guides. They can't stick as such but they can wear out.

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156 , guide , seals , sticking , valve

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