Traditional Culture Encyclopedia - The 24 Solar Terms - Reasons for insufficient cylinder pressure of Chang 'an Yuexiang V7 1.
Reasons for insufficient cylinder pressure of Chang 'an Yuexiang V7 1.
1. Air leakage between cylinder head and cylinder: turn the engine with your feet and carefully check whether there is oil foam on the joint surface between cylinder head and cylinder. If there is oil foam, there is air leakage at the gasket of the cylinder head. At this time, check whether the compression nut on the cylinder head is tightened;
2. The piston ring and cylinder are seriously worn or the piston ring is stuck, resulting in air leakage;
3. If the spark plug gasket is damaged or there are impurities on the surface, forgetting to install the spark plug gasket will lead to air leakage between the spark plug gasket and the cylinder head.
Cylinder pressure of gasoline engine;
1, the cylinder pressure of gasoline engine is normal from 8 to 1 1bar,
2. The cylinder pressure of diesel engine is normal, ranging from 12 to 16bar. The cylinder consists of cylinder, end cover, piston, piston rod and seal. Its function is to separate the flow passage of the steam turbine from the atmosphere and ensure that the steam completes the work process in the steam turbine.
Check the cylinder pressure by:
1. Install the cylinder pressure gauge on the engine;
2, hot car, the engine runs to normal temperature, so that the temperature of the coolant is maintained between 90 degrees;
3. Remove all spark plugs or fuel injectors on the vehicle;
4. Step on the throttle to make the throttle fully open;
5. Screw the threaded pipe joint on the spark plug hole;
6. Start the starter for two seconds, read the pressure value after confirming the pointer, press the check valve button, exhaust and decompress, and return to the pointer.
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