Tuesday, July 8, 2008

Why My Radiator Water Keeps Dropping?

There are several reasons of engine cooling system failure.

Common Engine Cooling Problems:

Let's look at the common problems cars have with the cooling system.

Broken tubing. Hoses and tubing wear out and leak coolant fluid. Once the coolant has left the system it can no longer cool the engine and therefore the engine will over heat.

Broken fan belt. The water pump is driven by the engine through a fan belt. If this belt breaks the water pump can not turn and coolant will not be pushed through the car engine. This will also lead to the engine overheating.

Damaged radiator cap. The radiator cap is designed to hold a certain pressure in the coolant system. Most caps hold 8 - 12 PSI. This pressure raises the point in which the coolant will boil and maintains a good, stable system. If your cap does not hold enough pressure, then the car engine could overheat on hot days since the system never becomes pressurised.

Water pump failure. Most commonly you will hear a horrible screeching noise and will be able to see engine coolant leaking from the front of the pump or underneath the car. Often there are early signs of trouble with small spots of coolant under the car after being parked overnight and a strong coolant odor whilst you are driving.

Head gasket. Do you have large amounts of white smoke flowing out of your exhaust? Then you could have a problem with your head gasket. The head gasket seals the cylinder head to the engine block and also seals the coolant passages. When this gasket fails coolant can enter the cylinder and it will be turned to vapor as the engine fires. Head gaskets most often fail after the engine has overheated in the past. When very hot, the cylinder head can warp and prevent the engine head gasket from sealing properly.

My car have water radiator level keep falling after a 3-4 day drive. And need to top up after 3-4 days. In the past i have car breakdown due to cooling fan malfunction. So engine become overheating and make me to stop the car in the middle of the road. After repaired (cooling fan replaced) the water level of my radiator keep falling after few days. I have checked no water leakage and my mechanics also found no leakage.

I think the head gasket is the problem as it suit what happen to my car in the past. And I never replaced the head gasket yet.


Artur said...

it's so interesting. very nice work

shauqi said...


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