Causes and solutions why diesel engine does not catch fire:
1. Check compression The main reasons for poor compression are:
1. The steel ring sleeve is worn and the piston ring and steel need to be replaced.
3. If the valve or valve seat is worn, grind the valve or replace the valve and valve seat.
4. The head gasket is leaking. Tighten the cylinder head nut or replace the gasket.
2. Check oil system for problems
1. Oil feed advance angle is incorrect, too early or too late. Remove the high pressure oil pipe and correct the oil supply time. depending on the steering wheel scale or the high position of the piston.
2. The atomization of the fuel injector is not good and the oil pump is not powerful enough. Replace the fuel injector or piston.
3·The oil pipe is blocked, replace itoil pipe or release the oil pipe.
4. If the diesel contains other substances, such as water, replace the diesel.
Pacific Automotive Network Check for air in the oil pump. If there is air in the oil pump, the diesel engine will not start. It is difficult to start the car in the morning. Please pay attention at this time. First turn the car key to the ON position. There will be a glow plug on the dashboard and the diesel preheat warning light will illuminate. 10 seconds. It's electric heating. The plug indicates insufficient heat, then press the clutch, accelerator, turn the key all the way and refuel at the same time, and observe whether the refueling is smooth.
Generally, to ensure normal starting of a diesel engine, three basic conditions must be met. First, well-atomized diesel must be able to penetrater into the combustion chamber timely. Second, air gets in; the combustion chamber must be The temperature is sufficient for the diesel to ignite and burn on its own; the third lubrication system operates normally; When these three conditions are met at the same time, the diesel engine will start smoothly.
Solutions for diesel vehicles that cannot start:
1. If a diesel vehicle cannot start, it may be due to low temperature, causing the fluidity of the diesel to deteriorate. replace it with high quality, low temperature diesel fuel.
2. When the ambient temperature is around 0 degrees, it is recommended to replace diesel with minus 10; when the ambient temperature is below minus 5 degrees, change it to minus 20; bottom, replace it. It's minus 30 for the diesel. Another possibility is that the battery is discharged, whichui is very common in cold areas. Solution: You can use the method of pulling the car to start the car, then use the engine to charge the battery.
3. If the problem persists after replacing the diesel, you should check and clean the air filter to see if it is clogged. A clogged air filter will affect the engine's air intake, which will affect. ignition. Detect the spark plug. Spark plug performance is related to the operating performance and efficiency of the vehicle. Check if there is oil in the high pressure pipe. If there is no oil, check if the oil line is clogged or if the fuel pump is faulty. If there is oil, you need to check the atomization performance of the fuel injector.
(Photo/Text/Photo: Li Shuiqing, Pacific Automotive Network)