When the diesel engine emits blue smoke, the engine oil enters the cylinder and part of it burns. The rest is discharged from the exhaust pipe. This not only results in the waste of engine oil, but also causes the carbon deposition of pistons, piston rings and valves to accelerate the wear of parts. The reasons for serious blue smoke are:
(1) If there is too much oil in the oil pan or if the cylinder liner blocks the water from leaking, the oil level rises. As a result, too much oil is splashed on the cylinder wall and it easily enters the combustion chamber. Should stop and check, if there is too much oil, let go part of it; if it is leaked, it should be replaced with oil.
(2) The lack or breakage of the piston ring's elasticity weakens its oil scraping effect, causing it to bleed. It should be replaced with a new one.
(3) The clearance between the piston and the cylinder liner is too large, so that the oil splashed on the cylinder wall can easily enter the combustion chamber. Even if it is overhauled, and if necessary replace the cylinder liner or cylinder to replace the increased level piston and piston ring, so that the fit clearance meets the requirements.
(4) Excessive oil in the air cleaner. For agricultural diesel engines using oil bath air filters, if there is too much oil in the filter plate, the viscosity of the oil is reduced due to the hot car, and the oil is easily brought into the combustion chamber by air. Therefore, the oil should be filled as required.
(5) The oil ring is installed in reverse. There are lead or taper on the edge of the oil ring. It must be assembled according to certain requirements to play the role of oil scraping. If installed, it will cause the ability of scraping oil to drop, resulting in engine oil.
(1) If there is too much oil in the oil pan or if the cylinder liner blocks the water from leaking, the oil level rises. As a result, too much oil is splashed on the cylinder wall and it easily enters the combustion chamber. Should stop and check, if there is too much oil, let go part of it; if it is leaked, it should be replaced with oil.
(2) The lack or breakage of the piston ring's elasticity weakens its oil scraping effect, causing it to bleed. It should be replaced with a new one.
(3) The clearance between the piston and the cylinder liner is too large, so that the oil splashed on the cylinder wall can easily enter the combustion chamber. Even if it is overhauled, and if necessary replace the cylinder liner or cylinder to replace the increased level piston and piston ring, so that the fit clearance meets the requirements.
(4) Excessive oil in the air cleaner. For agricultural diesel engines using oil bath air filters, if there is too much oil in the filter plate, the viscosity of the oil is reduced due to the hot car, and the oil is easily brought into the combustion chamber by air. Therefore, the oil should be filled as required.
(5) The oil ring is installed in reverse. There are lead or taper on the edge of the oil ring. It must be assembled according to certain requirements to play the role of oil scraping. If installed, it will cause the ability of scraping oil to drop, resulting in engine oil.
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