Cars & Vehicles
Thermostats

How do you know when your thermostat and head gasket need to be replaced?

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Wiki User
2006-07-19 14:39:29

The thermostat needs replacing any time you service the cooling

system. You should also replace it if the engine is overheating,

and you suspect it is defective. A blown head gasket will exhibit,

certain symptoms. Coolant in the oil, white smoke from the

tailpipe, overheating, air bubbles coming from the radiator,

missing on one or more cylinders, a brown looking foam on the

underside of the oil cap. A compression test will help to verify

this.


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