Oil Pick-Up Tube
A pipe extending from the oil pump to the bottom of the oil pan that draws engine oil through a screen to filter out large debris.
The oil pick-up tube is a critical internal engine component located at the very bottom of the crankcase inside the oil pan. It connects directly to the inlet side of the oil pump and acts as the intake straw through which the pump draws engine oil to lubricate the engine.
The pick-up tube features a flared end positioned just millimeters above the bottom of the oil pan, ensuring it stays submerged in oil even during hard cornering. The opening of the tube is covered by a wire mesh filter screen. This screen acts as a coarse filter, trapping large particles like carbon scale, gasket material, or metal debris before they can enter the oil pump and engine oil galleries.
The main threat to an oil pick-up tube is blockage. In engines with severe oil sludge (often due to neglected oil changes), the sludge will accumulate on the mesh screen, clogging it. This starves the oil pump of oil, causing a sudden drop in engine oil pressure, oil starvation to the bearings, and catastrophic engine failure.
Diagnosing a clogged pick-up tube involves measuring engine oil pressure with a mechanical gauge. If a blockage is suspected, the oil pan must be removed to inspect, clean, or replace the pick-up tube assembly. Ensuring engine oil cleanliness through regular oil changes is the best way to prevent pick-up tube blockage.