Baotou North Benz engine parts difficult to start, a large number of exhaust pipe black smoke, is the result of incomplete combustion of diesel.
The reason
Poor quality diesel oil.
Air intake is not smooth, air filter clogging.
Fuel injection timing adjustment.
Poor sealing the injector needle, a drop of oil leakage.
The injection pressure is too low.
The oil supply is too large, deterioration of combustion.
The cylinder pressure is low, poor atomization.
The diagnosis and treatment methods
Determine whether the diesel quality meets the requirements.
Check whether the North Baotou Benz air filter is clogged.
Check whether the fuel injection timing is premature. Turn the engine and insert the camshaft timing pin, which is located in a cylinder compression TDC, check the fuel pump cam shaft locking pin can be inserted, if you cannot insert that timing is wrong, need to be adjusted.
The school pump, check the fuel pump fuel supply is too large.
The injection pressure and spray the injector is good, injector can not drip phenomenon.
The use of oil method check each cylinder work.
If the above tests were normal, but the fault still, should have no abnormal examination in Baotou North Benz parts cylinder pressure and piston, piston ring and cylinder clearance, whether cylinder gasket destroyed or valve is not tightly closed.