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Pressure in coolant (expansion) tank

1032 Views 18 Replies 9 Participants Last post by  MrAfaKam
Hi!
How much pressure in coolant tank for 1.9JTD 16V (Alfa GT) is normal?
When i open coolant tank the pressurise goes away and antifreeze rises substantially, is it okay?
When the tank is closed there is no bubbles when engine is running, but when it is open there are bubbles, should i be worried about a head gasket? There is no oil in coolant tank and no MAYO in oil cap/dipstick

Thanks!
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