Mazda 3 Low Oil Pressure

The Mazda 3 Low Oil Pressure Warning is displaying on your Mazda 3, it could be a fault with the oil pressure switch but the chance of it being that is slim. The point of an oil pressure switch is to monitor the oil pressure flowing through the engine’s major components in your Mazda 3 so when it flags up on your display, Mazda 3 Low Oil Pressure simply means the oil pressure switch is just doing what it’s supposed to do.

Mazda 3 Low Oil Pressure What is Oil Pressure

The point of oil pressure is to prevent metal to metal contact in moving parts like the crankshaft which is located at the bottom of the engine in your Mazda 3 and is supported by what is called main bearings. These main bearings are indeed made from metal but because of oil pressure, the crankshaft can rotate freely between the main bearings in a space no thicker than a piece of paper.

Drop in Oil Pressure

Oil pressure in your Mazda 3 Engine is created by the Oil Pump which is normally driven via a chain, if the Oil pump chain in the Mazda 6 Engine was to snap then it would cause a complete drop in oil pressure. Another reason for The Mazda 6 Low Oil Pressure is oil carbonization. Oil carbonization is caused by carbon deposits entering the oil. Once the oil cools down the carbon deposits solidify and form small lumps, and these small lumps cause the oil pump in the Mazda 6 engine to fail.

Mazda 3 Low Oil Pressure

On the bass of the oil pump in the Mazda 6 Engine, there is a metal goze in the intake of the oil pump, the purpose of the goze is to stop any carbon deposits from entering the oil pump. The problem with this is, the carbon deposits can get stuck on the metal goze causing a reduced flow of oil entering the oil pump, this is the cause of the Mazda 3 Low Oil Pressure.

Oil Carbonisation

There are several theories for oil carbonization but let us look at for what it is, solidified lumps of oil. One of the main causes of oil carbonization is injector blow pass, this is where the actual combustion gases blow past the injector washers which seal the fuel injectors in their locations. This blow pass gas can make its way into the engine oil system and when the oil cools down, we what is called carbon lumps.

Oil Dilution

Oil dilution is caused by the d p f system regenerating to burn off the sort partials sorted in the d p f filter. When the d p f system is in its regenerating state the fuel injector delivery rate and timing is altered by the E C U to cause a higher temperature burn in each cylinder which in turn increase the temperature in the d p f filter and burns off the sort partials. The problem with this is, the engine is also producing a toxic crankcase gases which contaminate the engine oil and dilute it down to mix of engine oil and diesel. When you combine this with oil carbonisation the result is that dreaded warring, Mazda 3 Low Oil Pressure.