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Teknikimobil.com – Technicianmobil will continue discussing cooling system problems that occur in car engines, namely checking for bubbles in the cooling system, namely in the coolant.
In the previous article we discussed cooling system problems, namely checking exhaust gas leaks in the coolant. This inspection aims to determine CO leaks.
Thermostat position©palicanparts
For specific internal cooling system leaks, you need to try the following. Remove the upper radiator hose from the radiator. Next, remove the thermostat. After removing the thermostat, let the hose touch the thermostat housing and fill it with plain water using a funnel. Place the thermostat in the hose. Next, turn on the machine. If bubbles appear before the boiling point is reached, it means there is a combustion chamber leak into the engine cooling system.
There are other, more effective ways to test cylinder head gaskets for leaks. With the engine cold, pressurize the cooling system with a radiator pressure tester. Remove all spark plugs in the engine. Turn off the fuel injector. After making sure the fuel injectors are dead, turn the engine with the help of the starter. When the engine is running, cover the spark plug hole using dry paper (do this for each spark plug). If there is a leak in one or more of the cylinders in question, the paper you use will be wet.
Thermostat with the house©youtube
The last method seems easier, but several important things such as turning off the fuel injectors and also keeping the spark plug holes free from certain objects entering the combustion chamber must be paid special attention to. The entry of certain objects will have fatal consequences because if there is no leak in the cylinder head gasket or related damage, you still have to disassemble the cylinder head to remove the object. For experienced mechanics, they will usually be very careful when doing this last method.