Oil Pump
The oil pump draws oil from the sump and pushes it under pressure through the engine to the bearings and other moving parts.
What is Oil Pump?
Oil pumps are usually gear or rotor pumps driven by the crankshaft or a chain. Many modern engines use variable-displacement pumps. A pressure relief valve limits the maximum oil pressure. Variable-displacement pumps reduce pressure when the engine needs less oil, saving fuel. The control unit may command them through an oil pressure sensor.
How it works
The pump draws oil through a strainer pickup in the sump and sends it through the oil filter into the main oil gallery.
Why it matters for your car
A worn pump or blocked pickup causes low oil pressure, which can quickly damage the engine. A red oil pressure warning means stop the engine. Debris from sludge or a failed part can block the pickup strainer; this is checked if oil pressure is low with a good pump.
Other terms
- Battery Charger (Smart Charger)
- Centre Bore
- Deceleration Fuel Cut-off (Overrun Fuel Cut)
- Dual-circuit Brakes (Split Brake System)
- Eco Mode (Economy Drive Mode)
- Electrical Resistance (Ohms)
- Facelift (Model Update)
- Fuel Rail
- Gasoline Particulate Filter (GPF/OPF)
- Grease Nipple (Grease Fitting)
- Infotainment Head Unit
- Leak Detection Pump (EVAP Leak Check)
- Mechanic’s Stethoscope
- Microfibre Towel
- Rear Spoiler (Rear Wing)
- Respray (Refinish)
- Roundabout
- Ultrasonic Parking Sensor
- Vinyl Roof
- Wire Wheels (Spoked Wheels)