Q: Air bubbling in coolant reservoir when car is starting /running.

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Air bubbling in coolant reservoir/tank when car starts/running. Recently had broken radiator hose replaced. Car shakes when running

My car has 120000 miles.

When the radiator hose was broken, did the vehicle overheat and did it overheat bad enough to cause a failure of the cylinder head gasket? When the new hose is replaced, air must be purged from the system and you will see air escaping the reservoir for a period of time while the system purges. If the engine is shaking from a misfire, the cause for the misfire must be determined whether it is worn spark plugs, a fuel problem or low compression from a failed cylinder head gasket. Consider hiring an experienced technician like one from YourMechanic who can come out and take a closer inspection of the vehicles cooling system to offer a more personal diagnosis.

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