It's a RRC 3,9 EFI engine...
Rangieman123
Active Member
Your pump could be full of air. You could try unscrewing the oil pressure sender and drilling slowly on the pump.
I did it, and i Put 2 more oil liters in the sump, i fill the 2 radiator pipes...and 1 minute drill (clockwise)...nothing
I will put again 2 more liters , too be sure the oil level in the sump is higher than the pump (gravity can help) ...before removing it...
discool
Well-Known Member
The oil filter should now be full of oil, but if no it up with with as much oil as you can without spilling it when refitting the filter.
But then 3.9 pump is supposed to be self priming, Ive never had any issues in the 23 years I’ve been doing oil changes when filling both the sump and filter before starting the engine.
But then 3.9 pump is supposed to be self priming, Ive never had any issues in the 23 years I’ve been doing oil changes when filling both the sump and filter before starting the engine.
I already fill the filter before...
discool
Well-Known Member
Ok, as I said the genuine LR 3.9 oil pump was described as self priming, with one of my oil changes I forgot to fill the filter before fitting, so on starting the dash illumination didn’t extinguish instantly, as it did normally, but remained for around 20 seconds or so.
My question is how do we know there is a issue, in the old 3.5 V8 days priming was mentioned a couple of times the procedure, but that was from the LR magazines of of the time and before internet.
I bought a hydraulic gauge to check precisely the pressure...but still have to prime the pump before...
I put 2 more liters , checked again the pump bolts; put some more oil in the cooler pipes (pictures)...and nothing !
Do i have an air gap somewhere after the pump ? Could i have an issue with the rocker arms ? If the oil is blocked somewhere, i should have resistance with the drill, i don't have . i still ask what could be the problem
Do i have an air gap somewhere after the pump ? Could i have an issue with the rocker arms ? If the oil is blocked somewhere, i should have resistance with the drill, i don't have . i still ask what could be the problem
I'm ashamed...i use a 13mm socket instead a 12 mm (i was sure it was a 12mm...), so now the drill really crank the pump...and full of oil squirts from one of the 2 cooler pipe, probably the excess of oil (4 liters in excess) . Tomorrow i will get the good oil level and try to prime the pump...
Good oil level...but pressure only in the oil cooler pipe...i put a bypass valve on it ...still no oil pressure in the block
