How to Restart a Stopped Car After Heavy Rain?

We all must have seen or experienced it many times: after an excessive rain, cars remain on the roads that turn into the lake and it becomes impossible to start them again. While diesel cars are more resistant to water at a certain height, this is a nightmare for gasoline and LPG cars.

Let me tell you the ways to prevent it and then start the car again.

First of all, remember that if the water level comes to the headlight level and your car suddenly stops, never start. no matter diesel or gasoline, water has been drawn into the engine from the air filter and has already taken its place on the pistons. If you crank, the pistons, block, etc. may be completely disintegrated. Sometimes when they fix the overturned car, it starts, some friends wonder if it is running and the engine is walking towards the right at that moment. Because the oil in the crankcase is already filled into the block. Anyway, if the engine has stopped due to water rising to the headlight level or higher, do not start it. Some of the 4×4 vehicles pass completely through the water, don’t chase after them just because they go and I go. they have this type of snorkel and draw the air from there.

petrol cars stay in the rain because of the ignition system. It is seen that they are rarely left due to another problem, but you may experience some future malfunctions after a serious water entry. It may not stay at that moment, but there is a high probability that it will cause a little trouble later on.

The ignition system consists of three main parts as we know.

electricity generating coil:

the cable that carries the electricity to the spark plugs:

and the spark plug that makes the ignition:

some cars do not have a wire and the coil is directly on the spark plug:

These parts work in sync with each other and provide ignition of the fuel drawn into the combustion chambers. Think of it like the stove in your home, you turn on the gas and press the button. After the crackling sound, the stove catches fire. If you pour water on that cracked place, the stove will not catch fire. Cars are like that too. When you go fast and get into a serious puddle, the water splashing from the tires will touch the engine block or the manifold and it will instantly turn into steam. This situation, which is experienced once or twice, does not stop the ignition, but if it is continuous, condensation will begin in the connection of the coil and the spark plug cable or the spark plug cable and the spark plug connection. In particular, the water entering the spark plug bearings will enter the cable part of the spark plug like steam coming out of the teapot and will stop the ignition. For this reason, your car does not stop immediately, but if it starts to shake or misfire, it will be to your advantage to throw yourself aside in order not to be in the middle of the road. because if it stops, it won’t work again and you will probably stay.

If it is raining, there is nothing you can do but sit and wait. If the rain has stopped before you call the mechanic, get down and open the hood. Take a few photos to avoid confusing the spark plug wires. Never confuse which spark plug wires coming out of the coil go to, otherwise the engine will not start again. Carefully remove these cables after the photo. When you remove the wires, you will see that the bottoms of the spark plugs are filled with water. Do not worry, you will have to wait for this water to dry. In the meantime, try to dry the ends of the spark plug wires. If you can find a cotton swab, it will work. If your hand is getting into the spark plug bearings, you can clean them too.

When the processes are finished, attach the cables and start the car by following the order. it will definitely work but the misfire will continue vaguely. In fact, as you use it and the engine warms up, the misfire will increase even more. Get yourself to a fuel station right away with compressed air in it. Do the same drying process you did there, this time with compressed air. The problem will disappear completely.

If your car does not start clearly despite these operations (except for starting and stopping, excessively jerky operation), it may have a different electrical problem. Get professional support, such as water contact to ecu sockets etc.

get well soon.