Car Repair Technology Sharing

 The car we came across today had a battery that was constantly running out of power and was preventing the car from starting, so we came over to see if we could fix it for her? We got in the car to start the vehicle first to try and unscrew the key door to start the vehicle and the dash lights went out quickly. In cases like this the battery is usually dead, so we looked for a backup power source and let the vehicle start before doing a check. With the cause of the problem found, see this battery symbol light? When this battery symbol light comes on, it means that the car battery is not charging. Let's take a multimeter and measure its power output, it is only a little over 12 volts, the normal charging voltage should be over 13 volts. Let's take the generator out and see what's going on. Let's take the generator apart and see what's wrong inside? In fact, this generator is very simple, the rotor rotates and cuts the magnetic lines to produce alternating current,...

 The car has been in the car park for a month today and now the vehicle won't start, so I'll see if I can get it fixed for him. The owner has just contacted the garage and the garage has come and checked it out and said they need to overhaul the engine.Let's get in the car and start it and see what the cause is. It's true that the car won't fire. There are generally three reasons why a car won't start, the circuit has to be normal, the oil circuit has to be normal and the cylinder pressure has to be sufficient so that the car can start properly. The circuit is relatively simple to check, we first check the circuit, lead out a spark plug, see if there is fire? Do you see any spark? The circuit is normal, we then check the oil circuit, unplug the oil supply to the engine, we find a bottle to catch it, start the vehicle to see if there is oil flowing out? Do you see it? The fuel line is also normal, we put this fuel line back on him, pay a little attention when i...

 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...