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What are the reasons for the diesel engine oil pump not delivering oil?

2 Answers

Laurie

07/24/25 5:44pm

Diesel engine oil pump not delivering oil causes: 1. Improper assembly or reverse rotation of the oil pump; 2. Wear between the plunger and plunger sleeve; 3. Wear of the delivery valve; 4. Failure of the delivery valve spring. Solutions for diesel engine oil pump not delivering oil: 1. Clean and repair the oil filter, suction valve, and suction pipeline; 2. Replace the plunger sleeve; 3. Replace the delivery valve. The working principle of a diesel engine: Air generates heat through compression, the engine injector atomizes and sprays diesel, creating an expansion effect inside the engine to push the piston to work. A diesel engine consists of the engine block, crankshaft connecting rod mechanism, valve mechanism, fuel supply system, lubrication system, cooling system, and starting system.

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VanEmmanuel

08/11/25 9:48am

After years of driving, my diesel car often encounters the trouble of the fuel pump not delivering oil, and there are quite a few main reasons. Internal wear of the pump is the most common, especially when the plunger or delivery valve gets stuck; a clogged fuel filter can prevent the pump from sucking oil; an empty fuel tank or air bubbles in the fuel line can stop the pump from drawing oil. Once, my car suddenly stalled on the road, and after checking, I found the filter was too dirty—simply replacing it with a new one fixed the issue. Additionally, failures in the pump drive system, such as a broken belt or loose chain, are also common occurrences; diesel gelling in cold weather can clog the pipes; or a failed relay in the control unit can cause the pump to stop working. It's advisable to carry a spare filter with you, as timely maintenance can save you from costly repairs.

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How long does it take to get the result of Subject 4 application?

Generally, a text message reply will be given within 7 days. Confirming registration status: There is a certain delay in the driving test system, and the system will provide a reply at the latest 2-5 days before the scheduled exam date. If there is no reply for a long time, it is best to call the local vehicle management office to clarify whether the registration was successful, to avoid missing the exam or making a wasted trip on the day thinking the appointment was successful. Driving test appointment ranking rules: First-time appointment: The sorting time is based on the date when the user initially applied for a motor vehicle driver's license. Non-first-time appointment: The sorting time is based on the date of the last exam. Self-cancellation: If a user who successfully scheduled an exam cancels the appointment due to personal reasons, the sorting time is based on the cancellation date. Simultaneous compliance: If both the second and third conditions are met, the most recent time is used as the sorting time.

What brand of tires does the Trumpchi GA6 use?

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What are the methods to avoid crossing the line when turning in an S-curve during Subject 2?

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