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Do you need to seal thermostat housing?
Most new thermostats come with their own gaskets or rubber seal, but not all. Use a new gasket and it should seal fine. If you feel the need to use sealant (I always do) use one made for the application. It is a flange so use a very thin film (no more than .
Why is my thermostat housing still leaking?
If it is coming from the thermostat location in the housing, it could simply be a thermostat gasket/O-ring leaking. If the leak is coming from any of the hoses, the leaking hose and clamp will need to be replaced. A cooling system pressure test would uncover the leak location.
Is there a gasket for thermostat housing?
Permatex Water Pump and Thermostat RTV Silicone Gasket is a non-corrosive, sensor-safe RTV silicone gasket material formulated specifically for water pumps and thermostat housings. This gasket maker has the highest water-glycol resistance available in an RTV silicone.
How do you stop a thermostat housing leak?
How to Fix a Leaking Thermostat Gasket
- Set the shifter in park, for an automatic.
- Locate your thermostat housing by following the upper radiator hose to the engine block.
- Spray the thermostat mounting bolts with penetrating oil and let it soak for 15 minutes.
- Place the thermostat housing upside down in a bench vice.
Can I use silicone instead of gasket?
It is fine to use the correct RTV sealant instead of a gasket if used in the right application (oil, high temp, fuel). Not, however, if the gasket thickness is required to produce a specific amount of clearance. RTV sealant is better than primitive gaskets in most applications ie.
How much does it cost to replace a thermostat gasket?
It will cost you about $1,000 to have the thermostat gasket replaced, and the labor and parts costs will depend on which mechanic you choose and how many parts need to be replaced.
Do you put gasket sealer on both sides?
Many mechanics will use an RTV gasket maker to hold a conventional or cut gasket in place during assembly. Some mechanics will even use the RTV gasket maker as a dressing, coating both sides of the gasket.
How can I get my thermostat housing to seal?
Basically, I cleaned the housing, placed the thermostat with rubber seal on it into the housing and rtv’ed everything letting it set overnight ( because I’d already tried without RTV and had a leak ). When I started filling I immediately noticed a leak.
Why is my Nissan thermostat not sealing properly?
It seems to me that the source of the leak is the thermostat being too small to seal properly, but I wanted to get other opinions before I go back to the parts place to complain.
How big is the hose on a Nissan thermostat?
After removing the hose side of the housing, I noticed that the thermostat seemed to look a bit too small for the opening, and measured that the engine side of the housing opening was about 52.5mm, while the thermostat flange with rubber seal measured only 49.25mm. The hose side housing diameter is about 42mm.