Re: Oil pump pressure

Posted by Owen_Dyneto On 2012/11/17 8:57:37

It's typical on any engine at startup for oil pressure to accumulate rather slowly, or at least not instantaneously and is dependent on several things including the temperature and viscosity of the oil and the type of oil pressure gauge. And a direct-reading pressure gauge (bourdon tube type) will respond instantly but the electric sending units typically have a lag and slower response. Your observation of 20 seconds or so to reach full pressure seems typical and I don't know that it's indicative of any problem.

That said, dropping the pan to clean it and the intake screen is always a good idea especially if you don't know that it's been done recently.