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Ford Focus Thermostat Gasket

What Happens When a Ford Focus Thermostat Gasket Breaks Down?

The thermostat is probably one of the most important but least talked about part in the car. For the engine to cool down, the thermostat regulates the amount and rate of the coolant that passes from the radiator into the engine. On the other hand, the thermostat also prevents fluid flow when the engine needs to warm up to operating temperature. To keep the engine in the best temperatures, the thermostat must remain functional all the time. But with some defects and problems, the thermostat can jam or freeze up, causing excessive internal pressure that can blow up the gasket. Once there's a breach in the thermostat, it won't be able to control the temperature, making it harder for your car to remain operational. Here are some of the cautionary indicators when this gasket has already failed.

Engine that won't warm up

The complete counterpart of overheating, a cold engine is caused by a thermostat that is stuck in an open position due to a messed up gasket. A thermostat opens only when the engine has already reached a certain operating temperature so it could administer the coolant. If the engine is still well below the operating temperature, the thermostat must not let any coolant in so that the engine will burn the fuel efficiently. However, if a thermostat is stuck in the open position, the coolant flows into an engine, which leads to inadequate engine warming. This causes performance and fuel efficiency problems.

Erratic temperature readings

A defective thermostat gasket won't let the thermostat determine the right engine temperature will sway open and close unexpectedly. Once this happens, the whole cooling process will be rendered useless as the radiator is prevented from functioning well.


Leaks can be found near a blown thermostat gasket once it already fails. The thermostat is housed in a small open groove in the intake manifold where the upper radiator hose is attached. The thermostat gasket, which serves as a seal between the space in the middle of the thermostat and the manifold will leak and cause the coolant and some fluids to leak onto the engine manifold.

Flailing engine performance

By drastically altering an engine's operating temperature, a failed thermostat will mess up the combustion process resulting to a drop in performance. An engine that runs too cold or too hot will not run properly. It must be regulated at all times. Without the thermostat gasket, this won't be possible.

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  • Tips for Maintaining a Working Ford Focus Thermostat Gasket

    The thermostat pretty much controls the flow of radiator coolant into an engine. Once it fails, it can lead to a gut-wrenching engine overheat or an engine that never fully warms up and wastes fuel. The bottom-line is: it brings nothing but bigger problems if left unattended. Therefore, it must be replaced as soon as possible. However, there may be times that the problem really stems from a blown thermostat gasket. Finding a new gasket isn't much of a big deal. But you can save more money and more time if you check out these tips.

    Keep an eye for leaks.

    Leaks are frequent in any part with a gasket that contains pressure. If you let the leak persist, you will lose the precious coolant that alleviates heat from your car. In turn, the engine will get hotter and hotter until it blows its top off, sending you straight to the road of repairs and expenses. Thus, it's good practice to keep an eye for leaks. Locate the thermostat and once you notice some green goo flowing, misting, dripping out of it, it's time to change the gasket.

    Seal the thermostat from time to time.

    Sealing the thermostat not only helps in prolonging the life of the thermostat, it actually does wonders to the thermostat gasket also. By applying a small amount of gasket sealer around the gasket, the seal is strengthened and the gasket will be able to last much longer. In addition, the thermostat will still be able to perform even if the gasket is already worn out. Remember to clean the surface on both halves of the housing before applying the seal. The surface must be completely clean and flat to ensure that the seal will be properly placed.

    Inspect the thermostat during draining and flushing.

    The best time to inspect the thermostat and the gasket is when you are flushing out the coolant from the radiator. You will be able to have a clear look on things because you are filling up the lines with fresh antifreeze (also known as coolant). Upon inspection you may find out that the gasket may have sustained cracks, or worse it may have broken up already. If this happens, just scrape off the gasket and the gasket residue from the mating surfaces and install a new gasket.