Huafengdongli R4100D2 - Abnormal Exhaust Smoke

(2) Replace the parts and assure the
stipulated lash
Remedy
( 1) Check piston ring and eliminate
the fault
5. Abnormal exhaust
smoke
When the engine works normally, the smoke color is light grey, when the load is
higher
at low time, it 'color is onlt dark grey, when the exhaust smoke is blue, white
or black,then the smoke color is abnormal. Blue means burning oil;white means fuel
fog no burns thoroughly inside the cylinder or water trapped inside the cylinder; black
means injecting fuel too much to burns thoroughly. Thouble cause· ahdits feature
5.1
Blue smoke
( 1) Lubricating oil flees, piston ring
installed inversely, choked or
worn out to badly
(2) Clearance between valve and
pipe hole
too large
5.2
White smoke
( 1) Fuel spray be atomized not well,
fuel drips
( 2)
too much water trapped in the fuel
(3 ) Water trapped in the cylinder
5.3
Black smoke
( 1) Engine is ouer - loaded
Remedy
( 1) Check the injection pressure and
the seal of the mate, adjust and
clean
or replace
(2) Test the fuel quality
(3) Inspect the seal of the cylinder
gasket;,check the water leakage of
the cylinder head and cylinder
liner,repair or replace
Remedy~·c.
( 1) Adjust to the stipulated load
• 67 •