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Cooling system question V70-XC70 1998

posted by  riverbend on  Thu Jan 22 08:22 CST 2015
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last visit: Wed Oct 22 15:29 CST 2014
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If the head gasket is leaking cylinder pressure into the cooling system you will see bubbles in the expansion tank when the engine is warm and running. Since the pressure cap is on the expansion tank you will need to start the car with it removed or be very careful removing it when hot (a good way to get a scalded hand...).

Also, if the head gasket is leaking between the cylinder and the cooling system you will see that one or more spark plugs is very clean, maybe with a slight green tint on the porcelain.

Greg





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New Cooling system question [V70-XC70][1998]
posted by  jmargush  on Thu Jan 22 06:33 CST 2015 >


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