what does low oil pressure mean and will it cause truck not to start

Asked by Jan 07, 2014 at 12:08 AM about the 2006 Ford Expedition

Question type: Maintenance & Repair

1 Answer

215

Low oil pressure means that for some reason, oil is not being forced into all areas of the engine in the quantities that the engine requires to offset component wear and damage to the engines' internal parts. It could be that the oil level is too low or that the oil pump is not functioning properly to lubricate the engine internals - or that the oil pressure sensor is just faulty.. Low engine oil pressure in itself should not keep the engine from firing and starting - if very low pressure, it would clank and knock when running, signaling that engine damage is occurring before your very eyes and ears.. If the engine has no oil at all and has seized up, the engine starter would not have the power to turn the engine over to try to start. If the engine still turns over, then it likely is something other than low oil pressure that is keeping it from starting.

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