I just started up my freshened over block and have zero oil pressure! New oil filter and nothing is being pumped into it or anywhere else.
The oil pump is a L28 turbo.unit that works and was filled before install.
Pick up is on…
Pump shaft is turning…
I had the font cover off and know I put those O rings on…but could they have fallen off???
What would cause this???
I had a similar issue, and I had RTV clogging up the pickup and the oil filter. Check for that if you just put your engine together. The oil had to be flushed several times in my case, and it works perfectly now.
Also, there could be a missing gasket on he oil pickup assembly, or the return valve could be stuck open.
did you prime it? most of my experience dwells on the 4G63T (which I had to prime) but the same princepal may apply here
I ended up priming it …used an old oil pump gear drive ( knocked the gear off) and a distributor spindle. Ran the craftsman drill in reverse and I started to see oil at the head. What a pain!
Then I had the deal with the air lock in the cooling system!
Thanx!!