Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Engine Lubrication Description
The oil pump is a trochoid rotor pump that is driven by the crankshaft via oil-pump-drive sprocket, oil pump chain, oil pump sprocket. The pump draws up oil from the oil pan through the oil pump strainer. The oil delivered from the pump flows through the oil filter.
The filtered oil flows through the two paths in the cylinder block.
Through the first path, the oil reaches the crankshaft main bearings. After lubricating the crankshaft main bearings, the oil is supplied to the connecting rod bearings by way of the passages formed in the crankshaft and then injected through the oil jets to lubricate the pistons, piston rings and cylinder walls.
Through the second path, the oil goes up to the cylinder head and flows in the passages formed inside the camshafts to lubricate them and the valve mechanisms.
The oil pump has an oil relief valve. The valve opens when the oil pressure exceeds the preset limit to release it.
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.