If during the operation of the engine you have a suspicion of a violation of the tightness of the cylinder block, then you need to find out the reason as soon as possible. Confirmation of such a malfunction may be coolant that has entered the crankcase or the presence of oil in the coolant.
Instructions
Step 1
In the first case, you should check the tightness of the cylinder block on a special stand. To this end, plug the holes in the cooling jacket of the cylinder block and start pumping water at normal room temperature into it under a pressure of about 0.3 MPa. If within about two minutes you do not find any leaks, then the cylinder block is not leaking.
Step 2
If oil gets into the coolant, drain it completely from the cooling system. Then you should remove the cylinder head, fill the cooling jacket with water and supply compressed air from the compressor through the vertical channel of the oil pipe of the cylinder block.
Step 3
If you see air bubbles rising out of the water, then there is a crack in the cylinder block and should be replaced. When disassembling the engine, if you decide to clean and rinse the cylinder block, first completely immerse it in a bath with detergent solution, then rinse it with the same solution, but clean the oil line with a jet and under pressure.
Step 4
At the end of flushing, the cylinder block must be thoroughly dried. Use compressed air for this. When doing this, pay particular attention to the oil line system. The surface of the cylinders must be perfect - no signs of corrosion, wear, scratches or cracks.
Step 5
Sometimes a situation arises when you need to dry the cylinders from traces of gasoline in road conditions. Car owners can have a variety of "recipes" for solving this problem. You can press the gas all the way and turn on the starter for 10-15 seconds, as well as bleed the cylinders, having previously unscrewed the candles. Some drivers recommend pouring acetone or ether into each cylinder and driving the starter with the plugs turned out. Perhaps the easiest way is to unscrew the candles and leave the cylinders open for 15 minutes.
