Check Leaks Between Cooling System and Combustion Chamber

Checking For Leaks Between Cooling System And Combustion Chamber

Warning! Danger of scalding!

Only perform this work after engine has cooled down.

Caution! When engine is running with cooling system depressurized, this can create steam bubbles. These cause the engine to overheat.

Observe coolant temperature.

Check for leaks in cylinder head with CO leak tester following manufacturer's instructions for use.





In the event of a leak, the color of the test liquid turns yellow by the carbon dioxide (combustion gas) entering the cooling system.