● When diesel engine is operating, there is a lot of smoke and
fuel consumption is too high.
● Inspect air filter, turbocharger, valve clearance and initial
angle of fuel supply are normal.
● There is no fuel leakage in low pressure fuel passage and
high pressure fuel pipe.
● Injector is normal, but high pressure fuel pump cannot supply
average fuel in every cylinder, so we judge that there is fault in high
pressure fuel pump
Fuel pump pole plug is worn heavily, which causes
fuel pump cannot supply average fuel in every cylinder.
Case analysis
Remedy
Add water lter and replace
fuel pump pole plug
Case description about black smoke exhaust
Water lter
Check fuel pump
Fuel pump
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