Does Bubbling in the Radiator Always Indicate a Blown Head Gasket?

[CarsonFitz]

Bubbling in the radiator does not necessarily indicate a blown head gasket. Here is relevant information about head gaskets: 1. Symptoms of head gasket failure: (1) Insufficient engine power, poor vehicle acceleration, and decreased performance. When the air filter is removed, a "popping" sound can be heard at the intake pipe during engine idle. (2) Bubbles or boiling in the radiator, along with white smoke from the exhaust. 2. Causes of head gasket failure: (1) Poor-quality head gasket with uneven thickness; air bubbles trapped in the sealing edge, uneven asbestos distribution, or loose edges. (2) Warped cylinder head, excessive unevenness of the cylinder block surface, or loose cylinder head bolts leading to poor sealing.