Operation and Maintenance Manual SC9DF Electronically Controlled Diesel Engine for Agricultural Equipment
50
The preheating device is operated
improperly (when required)
Follow proper procedure for preheating
The intake system is blocked
Check whether the intake system pipeline
is blocked
There lacks fuel in the fuel tank Refill appropriate fuel
Air enters the fuel system Discharge the air
5.2 Sudden misfire
Possible Causes Correct
The fuel is contaminated Replace with clean and qualified fuel
Air enters the fuel system Prime the fuel system
There is fuel leakage at high-pressure fuel
line
Check the line for leakage, tighten and replace relevant parts if necessary
Low pressure fuel pipe or fuel filter is
blocked
Check the pipe and filter element, clean the primary fuel filter and strainer,
and replace the fuel filter if necessary
The fuel injection timing or valve timing is
incorrect
Please consult the authorized service station or provider
The fuel transfer pump is failure Repair or replace the fuel transfer pump
5.3 Engine power loss
Possible Causes Correction
The vehicle is overloaded Reduce vehicle’s loads to permitted range
The fuel supply is hindered Check the fuel inlet for resistance, clean primary fuel filter and strainer, and
replace the fuel filter if necessary
The fuel quality is poor Use the fuel specified in this manual and fill a temporary tank with right
high-quality one, with which to run the engine and verify the fuel issue
There is fuel leakage from high-pressure Check the joint(s) or high-pressure fuel pipe(s) for leakage, tighten/replace
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