Does thermostat housing need sealant?
Does thermostat housing need sealant?
Most new thermostats come with their own gaskets or rubber seal, but not all. So check that your new thermostat includes one; otherwise, buy one. Remember that you may need to apply sealant to the new gasket—check your vehicle service manual. Some thermostats come with a rubber seal instead of a traditional gasket.
Where does the leak come from on a thermostat?
However, if the leak is coming from where the housing is mounted, the housing and/or housing gasket has failed. A cooling system pressure test would uncover the leak location.
Can a bad thermostat cause a coolant leak?
If a vehicle is overheating, a bad thermostat could be the problem, and a damaged thermostat housing is more likely to produce a coolant leak, either from a cracked or warped housing or a failed seal to the engine. The thermostat housing can be made of metal or plastic.
Can You seal a thermostat housing with a gasket?
Most housings and manifolds have a recess machined in to allow for the thermostat stamping and a gasket to complete the seal. I suspect with no thermostat the hot, pressurized coolant decides to leave the premises via the gap, even if walled in with a paper gasket.
Can a thermostat be sealed with an O ring?
The thermostat housing leaks despite best efforts to retighten. It is a nice aluminum piece with an O ring. No other gasket or sealant was used. I am inclined to dispense with the O ring and use a conventional paper gasket with a bit of sealant. Any reason not to? Click to expand… Is that one of the swivel housings? It looks like it.
However, if the leak is coming from where the housing is mounted, the housing and/or housing gasket has failed. A cooling system pressure test would uncover the leak location.
If a vehicle is overheating, a bad thermostat could be the problem, and a damaged thermostat housing is more likely to produce a coolant leak, either from a cracked or warped housing or a failed seal to the engine. The thermostat housing can be made of metal or plastic.
Most housings and manifolds have a recess machined in to allow for the thermostat stamping and a gasket to complete the seal. I suspect with no thermostat the hot, pressurized coolant decides to leave the premises via the gap, even if walled in with a paper gasket.
The thermostat housing leaks despite best efforts to retighten. It is a nice aluminum piece with an O ring. No other gasket or sealant was used. I am inclined to dispense with the O ring and use a conventional paper gasket with a bit of sealant. Any reason not to? Click to expand… Is that one of the swivel housings? It looks like it.
