Thor Forums

[Big-Foot]

Oil pressure issues must be troubleshot using a mechanical oil pressure gauge. If you truly have no oil pressure immediately (within 2-3 seconds) after start-up, you’re sitting on a ticking time bomb. Oil pumps that are worn or made out of tolerance will lose their prime and sometimes can take hundreds of revolutions to suck enough oil from the pan to regain their seal and become primed.
- on the flip side -
There have been many cases where the oil pressure sending units have hardened diaphragms which later crack and leak. Pressure transducers fail.