Re: Oil Pressure and...

Posted by Owen_Dyneto On 2009/6/28 19:52:13

2. What does it indicate if my guage shows 20lbs (at idle) and does not increase with engine revs?
3. Why would only one journal be pushing oil?

Though your hot, idling oil pressure with something like SAE30 oil should be higher, perhaps 30 or 35, it's not all that important. What is important is what the pressure is at road speed, say 25-40 mph - then it should be about 40 psi, though 35 would be marginally OK. Low pressure under those conditions with no other explanation would mean what we've indicated before, worn pump (unlikely), weak pump pressure relief spring, or excessive wear on the main and/or rod bearings or crankshaft.

The word "journal" usually means one of the crankshaft surfaces that either rides in a main bearing, or mounts a connecting rod, so I'm not sure what you mean.