Got a fresh 2.5 all together, used oil for assembly and filled the pump as well, upon build.  Its been sitting for about a month.  Best suggested way to reprime this or.....just light it off?

If you had used Assy. Lube, just start it.

Easiest way to pump oil through it is to crank it. It is a little slow, but it works. If the starter solenoid has a 1/4 inch spade connector, get a piece of 12ga wire and crimp a female spade connector on one end and plug it in to the solenoid and hold the other end on the battery positive and let crank for 10-30 seconds. That way the key is not on, so no fuel to worry about.

Many years ago, I made one with a push button switch and alligator clip for the battery and different connectors for starters. Wires were long enough I could sit in the seat and with the MT is first or reverse I could move it around.

We use a pressurized tank of oil and an adapter custom made for the oil pump discharge port to fill the engine with oil at 90 psi. We put all 5 quarts in them this way. We hand crank them while they are filling. 

You can try cranking it with the crankshaft sensor disconnected, but unless the oil pump is packed with assembly lube it probably wont prime. 

You would likely be fine to just start it and observe the oil pressure light. But we don't take that risk on the high dollar engines we build. 

GD

Edited October 3, 20205 yr by GeneralDisorder

I use to pull the coil wire and crank it until the oil light went out.  All the above opitons are good.

I didnt do the rebuild, he used oil, I use assembly lube.  

GD; thats what I am probably going to do.  I was going to do it through the oil sending port though.

That doesn't prime the filter. Have to go through the oil pump discharge port to do it right. 

GD

True, but if you manually crank the engine backwards, it would suck oil into the pump, from the filter [provided it didnt have a back-flow valve].  I sure could be wrong but this pic seems to agree with that theory?  This is what a soob engine builder told me at least. 

The oil pump  isn't going to suck anything at hand crank speeds. And all the filters have anti-drain back valves so wouldn't work anyway. The system is only designed to flow in one direction. 

I don't get what the problem is with just using the right port?

GD

No issue except for the fact it's all buttoned up and in the car already. 

5 hours ago, opus said:

No issue except for the fact it's all buttoned up and in the car already. 

We fill the oil through the discharge port on the bottom of the oil pump right before startup. As in the engine is fully assembled and installed. 

GD

Ahhh...thats not covered by the timing covers.