DAYDREAMER
Recycles dryer sheets
- Joined
- Mar 26, 2008
- Messages
- 413
You sure about that? My fuel pump runs when I turn the key to "on" but not the oil pump. The car has to be running for the oil pump to run and build oil pressure.
I'm sure one of our automotive experts will chime in.
You are correct, the engine needs to be running for the oil pump to be spinning and pressurize. Only electric oil pump I'm aware of is an add on feature used on more industrial engines to prelude before start up.