The reasons for this failure are many, users can exclude from the following aspects:
â— Check the fuel quality. If the fuel quality is poor, replace the fuel with good quality.
â— Readjust the fuel supply of the fuel injection pump;
â— Check the valve clearance. If the gap is found to be too large or too small, the positive valve clearance should be readjusted.
â— If black smoke is often accompanied by a crisp knocking sound, this is caused by the premature supply of oil; if black smoke is blown into the exhaust pipe, this is caused by the late supply of oil. If both of the above situations occur, the oil supply time must be readjusted.
â— Check the exhaust back pressure. If it is too high, check the exhaust pipe, muffler, and brake valve to eliminate the malfunction.
â— Check the fuel quality. If the fuel quality is poor, replace the fuel with good quality.
â— Readjust the fuel supply of the fuel injection pump;
â— Check the valve clearance. If the gap is found to be too large or too small, the positive valve clearance should be readjusted.
â— If black smoke is often accompanied by a crisp knocking sound, this is caused by the premature supply of oil; if black smoke is blown into the exhaust pipe, this is caused by the late supply of oil. If both of the above situations occur, the oil supply time must be readjusted.
â— Check the exhaust back pressure. If it is too high, check the exhaust pipe, muffler, and brake valve to eliminate the malfunction.
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