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Q: 32 valve northstar on 1998 Cadillac DeVille

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air bubbles in the resovior clicking sounds comes from resovior and it leaks out of overflow the car maintains its normal tempature
No car image 94a1663db56199c5353592009e34aaa51078a2469bed068bb8d6f0ba43accf97
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It sounds like a blown head gasket. Please have a qualified technician confirm this! Also, if you decide to have the repairs done be sure the shop has experience with northstar head gasket jobs. It is not uncommon for the bolt holes in the engine block to be damaged and require repair. Make sure there are no overheating issues after the head gasket repair is complete. Overheating the engine is the number one cause for head gasket failures.
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