How Do Oil Pumps Work

How Do Oil Pumps Work

How does a oil pump work? The oil pump is a light and compact pump, which can be divided into three categories: inline type, distribution type, and single type. The oil pump needs a power source to run, and the camshaft at its lower part is driven by the crankshaft gear of the engine.

The oil suction and oil pressure of the diesel engine oil pump are completed by the reciprocating movement of the plunger in the plunger sleeve. When the plunger is at the lower position, the two oil holes on the plunger sleeve are opened, the inner chamber of the plunger sleeve communicates with the oil passage in the pump body, and the fuel quickly fills the oil chamber. When the cam is pushed against the roller of the roller body, the plunger is raised. Due to the movement of the plunger, the fuel is squeezed out from the oil chamber and flows into the oil passage.

When the plunger blocks the oil hole, the oil pressure process starts. As the plunger moves upward, the oil pressure in the oil chamber rises sharply. When the pressure exceeds the spring force of the oil outlet valve and the upper oil pressure, the oil outlet valve is pushed open, and the fuel is pressed into the oil pipe and sent to the injector.

How to Test Oil Pump

If the oil pressure light comes on, stop the vehicle. Then check your oil pressure gauge. If the reading is low, it can cause an oil pump failure. If the engine makes a sound, it is also a sign of an oil pump failure.

Another step in testing your oil pump is to check it with a dipstick. Stop the vehicle for a few minutes and check the oil level with the dipstick. If necessary, add oil until full.

If any indicator shows a problem, start the engine again. If so, check the oil pressure unit, wiring, or plug for problems.

Finally, you can install an oil pressure gauge, and run the engine to read the pressure. If OK, then the problem is with your sending unit, not the oil pump.

If your oil pump indicator persists, have your oil pump replaced by a mechanic.

What Causes Oil Pump Failure

The reasons why the oil pump is broken are as follows:

1. The oil in the oil tank is insufficient. Because the oil level is too low, the oil pump motor cannot be cooled and lubricated, which will cause the motor to overheat or even stop. If the oil pump is often in this working state, premature damage to the oil pump is inevitable.
2. Poor oil quality. Due to relatively poor oil quality, the fuel tank will be filled with various impurities or foreign objects. The fuel pump sucks fuel through the bottom of the filter and pumps it into the engine. In this process, the large particles of impurities are blocked by the filter, and the small particles of impurities are sucked into the oil pump motor, which will inevitably increase the wear of the oil pump motor and cause early damage to the oil pump.

3. The gasoline filter has not been replaced for a long time. The gasoline filter has not been replaced for a long time, the gasoline filter supply system is seriously blocked, the gasoline pump oil is hard, and the gasoline pump is damaged under long-term high load conditions.