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Check whether the pressure sensor hose is damaged
Check whether the fuel injector is blocked
Other examinations.
5. According to the confirmed fault code, appearance inspection and basic function
inspection results, carry out fault treatment.
6. Use the fault diagnosis instrument to check whether the idle speed data of the hot engine
in the system is within the specified range.
7. The method in the fault diagnosis table is used for fault analysis and treatment.
8. Clear the fault record.
EMS fault diagnosis table
Failure phenomenon
Difficult to start
Possible causes
Starting system fault:
Excessive engine starting resistance or
insufficient cylinder pressure;
Blockage of air filter or air leakage of throttle
body and intake pipe;
No spark or abnormal spark;
The fuse is blown;
The starting speed is lower than 300r / min;
Poor contact of high voltage connecting wire;
Aging of spark plug cap and poor water
insulation;
Main cable line fault or poor grounding;
Spark plug failure;
Ignition coil fault;
Emergency stop switch failure;
ECU failure;
The engine speed sensor or signal wheel is
faulty.
No fuel pressure or insufficient fuel pressure:
Oil pump relay failure;
The fine filter is blocked or the oil pump fails;
Solutions:
Maintain the starting system as
described in the previous chapter:
Check the mechanical part of the
engine;
Repair the air filter, throttle body or
intake pipe;
Replace fuse;
Check the starting system;
Reconnection;
Replace the spark plug cap;
Line maintenance;
Remove carbon deposit or replace
spark plug;
Replace the ignition coil;
Replace the emergency stop
switch;
Re plug or replace ECU;
Remove scrap iron and adjust
clearance.
Re plug or replace the oil pump
relay;
Replace the fine filter or oil pump:
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