What should I do if the Volkswagen engine is flooded?

Hello, the public's water inflow can be solved like this:

First of all, it is necessary to judge whether the connecting rod is compressed and deformed during this abnormal flameout. The distance between the two pistons formed at the same position and the upper edge of the cylinder can be compared by caliper measurement. If the values of the two pistons are different, the larger value may be the deformation of the connecting rod. Of course, it is also possible that both pistons have problems. This needs to be further confirmed by rotating the crankshaft to position the two pistons at the top dead center and checking whether the edges of the pistons are flush with the upper edges of the cylinders. After checking one by one, it is completely possible to determine which cylinder has problems, so as to order related accessories. But for maintenance personnel, in order to achieve better maintenance effect, they advocate replacing all connecting rods and pistons. Once the vehicle is turned off in water, don't try to ignite it again. Because you can't judge what caused the flameout in heavy rain or wading, the most reliable way is to stop thinking about starting the engine.

Generally speaking, there are three situations in which the engine is flooded:

Case 1: When the vehicle is driving in the water, the engine is turned off due to water inflow; If your car suffocates in the water, the maintenance engineer will ask you to authorize them to disassemble the engine.

The second case: after the vehicle is soaked in water, it is towed back to the repair shop and the engine has not been started; In this case, the vehicle was washed only once and then towed to the repair shop. The engine did not start halfway, and basically did not cause irreversible damage to the engine. The main job is to clean up the water in the engine, but the cleanliness should be considered according to the situation. In more cases, the intake pipe and intake manifold should be removed, and the water inside should be dried with compressed space.

The third case: after a small amount of water enters the engine, the owner starts the engine in parallel for a certain distance without knowing it. How to judge the damage of engine? If you can't turn the crankshaft with a wrench, you can preliminarily judge that the connecting rod is seriously damaged. After disassembly, the engine cylinder block, connecting rod and piston should be replaced as a whole as appropriate. The specific detection situation is the same as the second situation.