Car Repair Technology Sharing

 This car engine shaking today is particularly strong, in fact, we encounter this situation, simply do not need to go to the repair shop, like this car engine shaking serious situation, generally are caused by the lack of cylinders, then we how to quickly determine? Is it a cylinder shortage problem? In fact, it is very simple, we will unplug the ignition coils one by one. Observe the engine shuddering, you can quickly distinguish which cylinder is not working? Now we start unplugging the ignition coil from the first cylinder, the engine shakes even more, even to the point of stalling, we plug it in, the engine goes back to the previous shaking state, continue unplugging the ignition coil from the second cylinder, the engine also shakes even more, even to the point of stalling, we plug it in, the engine goes back to the original shaking state, then unplug the ignition coil from the third cylinder, the engine does not respond. Then we unplugged the ignition coil of the third cylinde...

Today, the owner of this car, the owner drove and then stalled, and then it will never start, ready to call a tow truck, I said I will help you see if it can be repaired? We first get into the car to start the vehicle to try, it really can not start, this does not start the fault, there are generally two possibilities, one is the oil circuit failure, one is the circuit failure, we first pick the simplest test, unscrew the spark plug, start the vehicle to see if there is a spark? See if there is no spark Our next step is to see if the oil line is clear? Find the oil line test point on the engine and start the car to see if it supplies oil? See, no oil supply either. The oil and circuitry are controlled by the engine's computer board. How many major signals does the engine computer pick up before supplying oil and power? The crankshaft position sensor is one of the most important signals, so let's take it off and have a look. This is it. The cause of the fault has been found, so ...

 This car today has a strange problem, after starting it, it is particularly easy to stall when the throttle is small, especially when waiting for traffic lights or when the brakes are applied. The owner had been to several garages, changed the spark plugs, cleaned the throttle, cleaned the injectors and finally replaced the fuel pump, but the problem was still not solved. This car came to me, in fact, this problem has nothing to do with spark plugs or injectors. We know that there is a part called idle motor, this part is specially responsible for the idle speed adjustment of the car, this is the thing. Let's take it apart and see, well, the cause of the problem has been found, you see this idle motor is full of carbon deposits. Blocking up the airways of the intake, no wonder there is a low idle speed and no idle speed. The cause of the inevitable problem is found and the solution is simple. Unplug this and We look for a bottle of cleaner. Clean the carbon inside and give her a c...

 Today the car's fault has been troubling the owner for more than six months, the cause of the fault is that the vehicle is difficult to start, the vehicle does not start for only two general reasons, one is the oil circuit, one is the circuit. Let's start with the easy one! We first remove the spark plugs, open the key door to start the vehicle and see if there is ignition? See if there is spark here. This means that the circuit is normal. Let's look at the fuel circuit again. It's actually quite simple to check the fuel circuit, there is a petrol detection port here and Normally, when the vehicle is started, the fuel pump gets power and the pump will supply oil through the petrol filter and to this test port here. Let's see if there is oil in this test port? Seeing as there is no oil here, next we go to the oil pump, which is all under the rear seat, just under this cover.This is the oil pump. Let's unplug the oil pump and have a look, the problem has been fou...

 Today's car is almost 10 miles of fuel, is your car also very fuel intensive? First get in the car, start the car, look at this idle speed, 1000 rpm. A normal car should idle at 700 to 800 rpm, can this not be fuel efficient. If the idle speed is higher like this, there is usually a problem with the throttle, and this is the throttle that The minimum amount of money needed to wash the throttle is 300 yuan, but today we are going to wash the throttle ourselves. First of all, the air filter is removed, there are no screws on it, and no tools are needed, it will fall off when you break it up by hand. After breaking them off, set them aside for now. First, wipe it with a paper towel and see how much carbon has accumulated. Here we will clean it. Before we clean it, we find a brick, first open the key door and press it against the gas pedal with This opens the throttle. Take some paper towels and spray this cleaner on top of the paper towels. Then tuck in the throttle and Wiping back a...

 Today this car, the owner left it half a month later, and then the ignition would not start. The owner was ready to pay for a tow truck, I said you don't have to call first, I'll show you what's going on, first try to start the vehicle, put the brake on and hang the p-gear, twist the key and no response at all. In this case, there are only two reasons, the battery is dead or the starting system has problems. Let's start with the simple one, turn on the headlights, see the brightness of the headlights, then press the horn and listen to the sound, the headlights of this car are also very bright, the horn sound is also normal, indicating that the battery power is sufficient. That must be the problem of the starting system, next we come to check the starting system, we just need to find a test pen, one end clamped to the negative terminal of the battery, test pen this end to test the power terminal of the magnetic switch, find a small partner to cooperate with the start of...

The car was parked here today and it was parked well. If I get in the car again, it will not be able to be put into gear. I called the repair shop to tow the car and asked for a price of 1,000 yuan. In fact, there is no need to call a tow truck if it can't be put into gear. I will see it today. Let's see if I can solve this problem for him without spending money. Try the car first, step on the brakes to start the car, and then shift into gear, it is indeed impossible to shift into gear. We all know that the automatic transmission car needs to step on the brake before it is in gear, and the car computer can unlock the gear lever when it receives the brake signal. How should I check in this situation? It's actually very simple. Use the brake pedal, lightly step on the brake pedal, and then use your ear to approach the gear lever. Listen to see if there is a slight rattling sound. If there is, it means that the gear mechanism inside is blocked. If not, it means that a brake li...