Standard sc cylinder compression pressure detection way how?

Standard sc cylinder compression pressure detection way how? For sc cylinder compression pressure, there is a certain standards for such standards, the manufacturer must be up to standard, so on the concrete way how to detect? Say first sc cylinder compression pressure testing standard sc cylinder compression pressure specification is cylinder manufacturers supply, according to the GB/T. — 'Auto repair quality inspection evaluation standard, engine overhaul, the provisions of the appendix B: engine cylinder pressure must meet the design specification, each cylinder pressure and each cylinder average pressure difference, can't do more than % of the gasoline engine, diesel engine can not %. A lot of metallurgical cylinder are testing standards. Moreover sc, engine cylinder compression pressure testing way is no abnormal operation, turning for who is greater than the ℃ temperature is reached. Stop the machine, remove the air filter cleaner, use compressed air to blow clean the dust and dirt around the spark plug or injection device material, then remove all the spark plugs and fuel injection device, and according to the order of the cylinder is put. , for gasoline engine and distribution device in the middle of the electrode high-voltage lines shall be pulled down and reliable iron, in order to avoid electric shock or fire problems, and then insert the cylinder pressure instrument of rubber joint detection inside a cylinder spark plug holes, centralizer pressure. Limited gas door and stop the air door in full open position. , use starting device rotate the crankshaft to the second, the engine rotating speed at every minute to turn, wait until the pressure meter head pointer stop and just after the maximum pressure stopped spinning. Scored cylinder pressure meter, record the readings, pressure check valve sugar pressure gauge pointer pointing to go back to zero. According to the above method in testing measurement of each cylinder, each cylinder testing number can not be less than two times. Finally, at the time of detection must pay attention, must not ignore the important, su cylinder in the test this is to have the same effect.