Lexus maintenance knowledge

Question: The Lexus 400 I bought in 1998 has been working well and has been maintained on time. However, the cold car is not good for the car recently!Sometimes it has to be played several timesmotorJust work. Is there something wrong? what to do?
Answer: There are two main reasons why the cold car is difficult to start: one is the cylinder compression pressure is low, and the other is the mixture is too rich or too lean.
It is recommended that you use an experimental method: step on half of the accelerator when starting. If it is easy to start, it may be the cause of the mixed gas. The faulty part is generally the fuel injector or the water temperature.sensor; If it is more difficult to start, it means that the mixture is too thin, and the fault may be the oil pump orThrottle. If none of the above happens, it is recommended to go to a specialist shop to check whether the cylinder pressure is normal.
Q: BecauseOil sealAging has caused some oil leakage in the engine (very slight, there are many oil leakages on the engine after driving for about half a year, and it will not drip to the ground). I don't know how to solve this problem. Is it necessary to replace a new oil seal? thanks.
Answer: I will reply to you about the oil leakage of your vehicle engine. I don’t know the location of the vehicle oil leakage. Our standard method to deal with such problems is to clean the relevant parts, and then run the engine to find the exact leakage location before proceeding. repair. Engine oil leakage is generally caused by the aging of the oil seal. When the engine is running at high speed, it may cause poor lubrication. It is recommended to go to a repair shop for repair in time.
Question: My LS400, model year 1993, single airbag, UCF-10, engine fault light is on, code modulation detects that the engine mixture is too thick, and the D gear is placed on the spot.brake, There is resonance in the car, and the phenomenon can be reduced by adding a little oil. Hanging N and P in place does not have this phenomenon. The air inlet and the fuel injector have been cleaned. Ask for solutions. Thanks!
Answer: The fault code appears that the mixed gas is too thick. Generally, it is caused by the fuel injection system detecting that the closed loop is too thick and cannot be adjusted. There are more than ten fault locations listed in the maintenance manual, indicating that this is a comprehensive performance code. It is recommended to check the electronic fuel injection system as a whole. In addition, there is resonance in the car with D gear in place, but there is no P and N gears. The problem may be the gearbox rubber support. It is recommended to go to a Lexus store for inspection.
Question: I have a 94 Lexus, which is European. No fast idling after starting in the morning,Rotating speedAt about 900 rpm, it is not good to replace the idle motor. And now there is a new fault, that is, the car cannot be started at a natural temperature of about 15 degrees, and it takes three or four times to start the car, and the speed is only 600 rpm. What is the fault?
Answer: There are many factors that affect whether a cold car does not have a fast idling speed. Whether the water temperature signal is correctly transmitted to the computer is the key factor. Because the idling speed of a cold car is determined by the temperature of the coolant, it is recommended to use Lexus special equipment for testing at a specialist shop.
Question: I have a Lexus RX300. I have scratched two side doors a few days ago. Toyota’s 4S shop said that it needs spray paint. My car paint is metallic paint and the color is pearl white.I want to ask: Is there a big difference between the quality of the sprayed paint and the original paint? What are the precautions? After sprayingAnti-collision glueThe color is white over the color of the car.
Answer: Original paint andcarRefinish paintThere is no difference in terms of quality, but the painting process is divided into high temperature paint and low temperature paint. As long as the paint is sprayed at a regular Lexus dealership, it will not affect the car. Finally, you mentioned the problem of chromatic aberration. For pearl white, it is recommended that you use it for a while, because the white paint will become darker with the use of time.