Check:
1) check the spark plug ignition system, when the engine is idling, with a wooden handle or a screwdriver tip on the metal shell cylinder cover or the engine itself, and the metal part of driver contact with each spark plug thread, such as engine and gradually slow down, then the spark plug under normal conditions, such as engine speed does not change, is the compression of the spark plug failure or the engine itself is not ideal. To see the state of the spark plug, the spark plug in the combustion chamber is oil or coke.
2 points of the high-voltage coil has the disadvantages – such as spark plugs intact, and the engine is still a flameout phenomenon, it may be the power point dent or ablation caused by excessive. The dent is too large to indicate that the distributor is out of service.
3) failure of oil supply system
4) the valve or valve adjustment is improper –
A) in turn or improper carburetor adjustment, high-speed operation, engine speed is not slow or uneven, and tempering after running for a long time
B diesel fuel is not completely burned, the engine running in the uneven running, and in the acceleration can not be turned quickly, this difficulty is not complete combustion. Lubricant for lubricating the cylinder wall and the crankshaft without evaporating or or completely burning gasoline.
(if there is abnormal sound in the engine department, is likely to be difficult to operate, the piston block, when running at high speed by the intake manifold injection cylinder oil, the amount of wash oil.)
Piston ring and cylinder damage of Baotou North heavy truck:
Start the engine and the speed is slightly higher than the idling speed, then the ventilation tube, listen, if there is a slight hissing, indicating the cylinder pressure into the crankcase, where there is a rich spark plug, also said that the damage has occurred the phenomenon of piston ring and cylinder wall.
Maintenance methods: if it is excessive damage, should be re honing cylinder. (slightly expanded Daqian% x/ inch, and with the increase of piston and piston ring size)
5) Baotou North heavy truck parts valve leakage: valve leakage is caused by engine flameout or one of the reasons for the uneven speed. To test whether the intake valve leakage? The utility model can be arranged on the air inlet of the carburetor by a handkerchief, and if the air inlet valve of the gas is leaked, the handkerchief is blown off. Baotou North heavy truck parts exhaust valve leakage? Can listen to the exhaust pipe, such as hissing sound, indicating that the exhaust valve leakage.
Method of repair: re polish the exhaust valve to make the gap moderately.