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a.
Pressure regulator valve of filter is
out of order
b.
Oil becomes too thick at low
temperature
Check and adjust it
Replace it with the lube oil of designated
category
c. No lube oil on the rocker shaft
Possible causes
Fixing methods
a. Too low the oil pressure
b. Blockage being somewhere in
lubricating system
Make adjustment
Find out and fix it
7.1.3
Smoking of the exhaust
Normally, poor atomization and combustion causes black smoke. If diesel drops are unable
to burn or some water comes into cylinder, then the white smoke will be resulted. Burning
of lube oil scurrying above the piston will produce blue smoke.
a.
Black Smoke
Possible causes
Fixing methods
a.
Sluggishness of nozzle valve
b.
Overloading
c.
Wrong advance angle of fuel
d.
Poor sealing of valves or incorrect valve
timing
e.
Too much unevenness of the diesel
distribution among cylinders
f.
Blockage of air filter
g.
Wearing of cylinder liner and piston
rings
Replace or grind it
Adjust the load
Adjust it
Check and adjust it
Check fuel injection of every cylinder on
injection
pump
test
bed
and
make
adjustment
Blow or brush it clean
Replace them with new ones
b.
White smoke
Possible causes
Fixing methods
a. Too low the injection pressure results
poor in atomization with oil drops
b. Too low the temperature of cooling
water
c. Water being in cylinders
Check, adjust or replace the injection pump
Cover the radiator with a cotton pad
Check cylinder head gasket and cylinder head,
replace the damaged parts with new ones
Содержание DF254G2-6
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