Expansion Tank Leaking Car

The radiator expansion tank is an important part of your car s cooling system.

Expansion tank leaking car. Started the engine expansion cap off idle normal no bubbles in expansion tank even when i revved the engine a bit by hand on the throttle cable input to the throttle body. I have a new one and looking to see how answered by a verified auto mechanic we use cookies to give you the best possible experience on our website. When i got home nine miles later the heater had gone back from hot to cold.

Fixed all the leaks changed a few hoses fitted new old stock expansion tank with new shiny stainless 15psi cap and ran it up to temperature and left it there for an hour with the cooling fan. It might be better to replace the leaky radiator expansion tank with a newer tank. Over time these expansion tanks can leak.

The tank is cracked and there are 2 pinhole sized holes in the corner. I have a 2001 ford taurus with a leaking coolant expansion tank. It s a plastic tank and it is under pressure.

The coolant expansion tank appears to be leaking from seam joint half way down. Last night i discovered the leak and used epoxy to try and fix it. I checked engine coolant which was low so topped up with approximately two litres of water.

This is a vessel that allows the water and air inside the sealed system to expand due to an increase in temperature. The changes in pressure due to overflow from the boiler during water expansion as well as having moving parts makes for the potential for degradation of the system. Step 1 investigate to find source of leak.

The expansion tank is a pressurized system. Even in the best boiler system your expansion tank may begin to experience some leaks. I checked radiator coolant and found i had lost the same amount of water which was being blown out of.