Exploring The GM Duramax High Pressure Oil Pump

The oil pump in a GM Duramax engine draws lubricant from the pan and sends it flowing around the briskly moving internals. The oil travels through specially designed passageways called oil galleries. The purpose of the oil is to cool down the moving parts and keep friction to a minimum. A properly working high-pressure pump will keep engine internals alive and functioning correctly for several hundred thousand miles.

Components and Functions

The inside of the oil pump is a simple mix of gears, bolts, nuts and an outer casing. Since the pump sits in the lubricant filled oil pan, there is little chance of rust or corrosion weakening the metal outer case. A high-pressure oil pump uses drive gears to create pressure in the system. The pressure pulls oil up out of the pan at the bottom of the engine and sends it clear up to the heads up top.

Common Problems

The GM engine requires frequent oil changes to keep the fluid from thickening and clogging up the lines. When the oil filter goes bad, it could release dirt and metal shavings collected from the engine into the oil pan reservoir. If this happens, the high-pressure pump will suck up these contaminants and send them back through the oil galleries. When quick moving internal components do not receive the proper amount of oil, the parts could overheat or seize together. The result is a loss of power or an engine that will not even crank over.

If the pump sucks up any substantial contaminants, the teeth on the pump’s gears could snap right off. The broken teeth reduce the pump’s ability to send oil through the system, resulting in sudden fluid starvation. Furthermore, the teeth could jam into the remainder of the moving gears and stop the pump altogether. Once the pump stops working, the GM vehicle will send a fault warning to the dash lights to alert the driver. The engine must be switched off at once to protect the rest of the internals from costly damage.

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Dodge Cummins High Pressure Oil Pump

The Dodge Cummins is considered a great, reliable engine that has always had a reputation as hard working piece of machinery. The Dodge Cummins requires proper functioning of the of the oil pump so that it can deliver the perfect type of pressure so that oil can be delivered across the engine. If the pump is not functioning and the pressure is not at good levels problems can occur in the engine. There are certain sign you can watch for that will signal when the oil pump is not operating at his best.

One of the first signals, like with many problems will be the service engine light alerting you. This lets you know that the pressure is not high enough. A service engine light can mean that the engine is leaking oil. It can also mean that it has burned oil faster than is required. When there is a reduction in pressure the oil will not lubricate properly. Ignoring these signs could lead to overheating. Because the Dodge Cummins is a tough engine but it does require that oil be plenty high enough so that the oil is delivered to the engine bearings. When this is not happening you might hear a strange start sound.

  • Do not underestimate the importance of the high pressure oil pump in your Dodge Cummins engine. It is an important device which is repsonible for vital systems to work right. As the engine ages it is very important to keep a close check on oil levels.Dog