Re: 1941 Packard 160

Posted by 29tons On 2023/2/12 12:40:51

I tried a few things this morning i checked that the oil filter canister had a 5/64 orifice it did. I deleted the oil filter so that all the oil pressure went to the lifters first. I tried to put a slightly heavier oil in it. none of those things worked. The oil pressure is about 30 psi hot maybe slightly higher. Its the 4th valve from rear. The noise is not there when the engine is cold. The only thing I can think of is remove the head and replace that lifter. I checked the low oil pressure article in the service letter and since its only 1 lifter I dont think that is it. but who knows. keep the suggestions coming.