How To Deal With A Failing BMW Oil Pump

A Comprehensive Guide to Diagnosing and Addressing Oil Pump Issues in Your BMW

The oil pump plays a critical role in ensuring the proper lubrication of your BMW’s engine components. When the oil pump begins to fail, it can lead to serious engine problems and potential damage. In this guide, we will provide a step-by-step approach to help you diagnose and address oil pump issues in your BMW, ensuring the longevity and optimal performance of your vehicle.

  1. Recognizing Symptoms of a Failing Oil Pump


  • Low oil pressure warning light on the dashboard.
  • Engine noise, such as knocking or tapping.
  • Reduced engine performance and efficiency.
  • Overheating or engine temperature spikes.
  1. Check Engine Oil Level and Quality

Verify Oil Level:

  • Start by checking your BMW’s engine oil level using the dipstick. Ensure that the oil level is within the recommended range.

Inspect Oil Quality:

  • Examine the oil on the dipstick for any signs of contamination or debris, which can indicate oil pump problems.
  1. Perform an Oil Pressure Test

Using a Mechanical Gauge:

  • To accurately measure oil pressure, consider using a mechanical oil pressure gauge.
  • Remove the oil pressure sending unit or switch, usually located near the oil filter or oil pan.
  • Connect the gauge to the same port and start the engine. Monitor the oil pressure as the engine runs.

Interpreting Results:

  • Refer to your BMW’s specifications for the ideal oil pressure range. If the reading falls below this range, it may indicate a failing oil pump.
  1. Inspect the Oil Pump

Oil Pump Location:

  • The oil pump is typically located within the engine, often behind the timing cover.

Remove the Oil Pump:

  • To inspect the oil pump, you may need to remove other engine components, such as the timing chain or belt, to access it.
  • Inspect the oil pump for any signs of damage or wear, including worn gears or a damaged pump housing.
  1. Check the Oil Pickup Tube

Inspect the Pickup Tube:

  • The oil pickup tube is responsible for drawing oil from the oil pan and sending it to the pump.
  • Ensure that the pickup tube is clean, free of debris, and properly connected to the oil pump.
  1. Replace or Repair the Oil Pump

If the Oil Pump Is Defective:

  • If you find clear evidence of oil pump failure during inspection, it is advisable to replace the oil pump with a new or rebuilt unit.

Professional Assistance:

  • Replacing an oil pump can be a complex task that requires engine disassembly. It is recommended to seek professional assistance or consult a qualified BMW technician for this procedure.
  1. Regular Maintenance

Preventative Measures:

  • To avoid future oil pump issues, maintain a regular oil change schedule using high-quality oil and filters recommended by BMW.
  • Periodically check for oil leaks and address them promptly.

By following these steps and being vigilant for the signs of a failing oil pump, you can take proactive measures to address the issue and ensure the continued reliability and performance of your BMW. If you are unsure about diagnosing or repairing the oil pump yourself, it is advisable to seek the expertise of a qualified BMW technician to prevent further engine damage and maintain the integrity of your vehicle.