I just got a fiat punto 1.3 multijet with no oil pressure, As I see turbocharger and oil pump are new. When I take the oil filter out and crank the engine filter housing fills with oil, as soon as I stop cranking the oil runs back into the lower hole in the housing. I have attached the picture of the housing. My question is, is there supposed to be some kind of check valve on the lower hole.
Please help