Recent rain，Frequency of water inlet in automotive engine。To prevent damage caused by water prevention，Do not restart after the car is turned off。

After the vehicle is waded，Water enters the cylinder from the intake manifold，Due to the non -compressiveness of the water，Pistons will be shorter, which will cause the engine connecting rod to bend or break，Under extreme conditions, the broken connecting rod will fly out of the cylinder。

The reason why the car is extinguished in the water is to cover the water into the water after the water is built into the water to lose the normal ignition function，The engine empty filter filter element is soaked with water，Leading intake resistance and increasing air intake room，Spark plugs cannot ignite。If the engine is restarted at this time, it is easy to explode the cylinder。

First of all, it is necessary to roughly determine what the engine is in.Basically divided into three types:

1、The vehicle is soaked in the water and causes the engine to water in water，More importantly, it has not been started until the vehicle is dragged back to the repair plant;

2、The vehicle is driving in the water，Due to the seabet iowater inlet in the engine;

3、After the engine is in water (a small amount of water，It will not stop the engine from starting)，The owner starts the engine without knowing it and drives a distance of driving。

These problems are discussed from the perspective of not buying the corresponding insurance vehicles，Actually, let's go back，Even if there is a corresponding insurance，At the time of fixed loss, it is also based on the principle of being able to save the province。

If the vehicle is only overwhelming (not the water off the water，Instead of being soaked by water)，Afterwards, they were dragged into the repair shop (no engine was started)，This basically does not cause irreversible damage to the engine，The main task is to clean up water inside the engine，But consider the degree of cleaning as depending on the situation，More is to remove the intake pipe and intake manifold，Blow the water inside with compressed air。

After determining that the engine does not need to suffer from disintegration，It's not over yet，The question is: Will the water in the cylinder flow back to the oil bottom shell with the oil?

The first thing to say is，There is a certain qi in the cylinder，where，The Pistons have played a sealing effect between the piston and the cylinder wall。

Except seal，The Pistons can also scrape off the excess motor oil on the wall of the cylinder，Prevent excess oil from entering the combustion room，Excessive loss caused by motor oil，But with the increase of the mileage of the vehicle，The cylinder wall will have a certain degree of wear，This causes the cylinder and the piston to become larger，Therefore, the common fault caused by it is burning oil。

and whether the stagnant water will flow back to the oil bottom shell，We are really hard to make conclusions，Because the use of the vehicle is different，wear will also be different，The objective cause of the existence cannot be controlled。

So，We still tell you that the simple judgment method is the most direct:We can use the oil ruler to know the state of the oil，If the oil dipped in the oil ruler appears milky white，Then you can basically determine the water intake of the lubrication system，This is necessary to completely replace the oil filter。

If possible, you can also use products that specialize seabet loginin cleaning the engine lubrication system for cleaning。

Below of 30 cm (generally under the side skirt on the body) below the water level，If the owner has no error operation，The damage to the vehicle is not great。

If the water level is immersed in more than 30 cm for a long time，It may cause harm to the internal circuit board of the car，Water immersion will be paired in the bus、Wire beam interface、Computer module and circuit part cause damage，The circuit will be distorted after the module operation is oxidized，Need to be replaced。

Vehicles with water soaking depth of more than 50 cm，Only replace the electrical appliances、Circuit，Only to eliminate various hidden dangers。If all or most of the whole vehicle is flooded，Need to make a comprehensive disassembly in the 4S shop、Cleaning、Dry the whole car chair and carpet，and maintained the entire car electrical appliance、Line, etc.。

After the engine is in water (a small amount of water，It will not stop the engine from starting)，The owner starts the engine without knowing it and drives a distance of driving。You have guess the worst possibility，So how do you determine this guess?

If you cannot use a wrench to rotate the crankshaft, you can preliminary judgment as serious damage to the link，After disassembly，Depending on the situation, the engine cylinder should be used、Link and Pistons for overall replacement。Specific testing measures as the same as the situation in the second，I won't go into details here。

If your car is destroyed in the water，Most of the maintenance technicians will recommend that you authorize to let them disassemble the engine。

surey，This is really difficult to determine whether the link was compressed and deformed during this non -normal flameout process (mentioned above，Filled changes are enough to cause fatal damage to the cylinder)。

The measurement of the stalemal ulnar can compare two pistons with the same itinerary to the distance from the upper edge of the cylinder，If the two have differences in value，A large side of the value may be deformed by the link。

Of course，It may also be a problem with both，This requires the two pistons at the upper stop point by rotating crankshaft，See if the edge of the Pistons is further confirmed with seabet ioQi Ping with the upper edge of the cylinder。

After investigation one by one，It can be determined which cylinder links have problems，For the targeted ordering related accessories，But for maintenance technicians，In order to achieve better maintenance effects，They advocate replacing all links and pistons。

Of course，If all cylinders are confirmed by inspection, there is no abnormal problem in the cylinder，Naturally, all are happy，Just replace the corresponding oil after the operation is completed。

Here you must pay special attention，Not soaking over the water or the engine of the engine causes the connection to turn off the flame、Pistons are replaced，It is necessary to determine the results of actual measurement。