The oil filter of commercial vehicles, as an important component of the engine lubrication system, its performance directly affects the normal operation of the engine. Once the filter malfunctions, it may lead to problems such as oil contamination and insufficient lubrication, which in turn can cause more serious engine damage. Therefore, it is of vital importance to diagnose and eliminate faults of the oil filter in a timely manner.

Common faults and diagnostic methods
The filter is clogged
Symptoms: Abnormal engine operation, decreased oil pressure, and increased engine temperature.
Diagnostic method: Inspect the appearance of the oil filter to see if there are any obvious blockages. Check the flow of the engine oil. If it is not flowing smoothly, it may be clogged.
The filter is leaking
Symptoms: Oil leakage, oil stains under the engine.
Diagnostic method: Check whether there are any leakage marks at the connection between the filter and the engine; Check whether the filter itself is damaged.
The filter is improperly installed
Symptoms: Unstable oil pressure, abnormal engine operation.
Diagnostic method: Check whether the filter is installed firmly and whether the sealing ring is intact. Observe whether the symptoms disappear after reinstallation.
Quality issue of the filter
Symptoms: Frequent faults such as blockage and leakage occur in a short period of time.
Diagnostic method: Check whether the brand and model of the filter meet the requirements of the engine. Observe the effect after replacing the high-quality filter.

Troubleshooting methods
For filter clogging
Troubleshooting method: Replace the oil filter with a new one; Check the quality of the engine oil and change it if necessary. Change the engine oil and filter regularly to avoid clogging.
Regarding the leakage of the filter
Troubleshooting method: Tighten the connecting bolts of the filter. Replace the damaged sealing ring or filter; Make sure the installation position is correct and there is no offset.
Improper installation of the filter
Troubleshooting method: Reinstall the filter to ensure it is securely installed and well sealed. Tighten the filter with a special tool according to the specified torque.
Regarding the quality issue of the filter
Troubleshooting method: Select a high-quality filter that meets the engine requirements; Avoid using inferior or non-compliant filters.

preventive measure
Regular replacement: Change the engine oil and filter regularly in accordance with the vehicle's user manual or the manufacturer's recommendations.
Choose high-quality products: Select oil filters from well-known brands that meet standards.
Correct installation: Ensure that the filter is installed correctly and firmly, and that the sealing ring is in good condition.
Regular inspection: Regularly check the condition of the oil filter to promptly identify and address potential issues.

The fault diagnosis and elimination of the oil filter of commercial vehicles is an important link to ensure the normal operation of the engine. By understanding common faults, mastering diagnostic methods and troubleshooting skills, filter problems can be detected and solved in a timely manner, avoiding more serious engine damage. Meanwhile, taking effective preventive measures can reduce the probability of faults occurring and extend the service life of the engine.