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Old 4th April 2010, 19:55   #17
markb63
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MG ZT 190 +

Join Date: Feb 2010
Location: longbridge ( birmingham )
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tried everything, one thing i have noticed is when i remove the expansion cap to check the coolant level in the morning i get a hiss of pressure relief on a stone cold engine, so the system must be ok . unless this is not normal and the air lock is slowly moving up to the tank and i am letting it out when i remove the cap
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