oil pressure

[Bobby 9891]

Just bought a 49 "C" & was wondering what is normal oil pressure ?? The gauge shows about 3-4 pounds of pressure @ working rpm"s & nothing @ idling. Runs good & seems to have power but was concerned- should I be ?? Thanks Bobby
 

[Justin SE IOWA]

Nope dont be worried. All those ole AC's have low oil pressure
 

[Dick L]

Low oil pressure on these engines has nothing to do with the amount of oil at the bearings. The oiling of the bearings comes from a rotating camshaft forcing the oil out to the bearings.
 

[Aaron SEIA]

Might want to make sure it has the correct oil filter. For a while some of the new replacements were using a pleated paper media that led to low oil pressure. Media in the filter should be spun cotton, I know the Fram C159 is correct. Not sure on others. My personal opinion is 3-4 working and 0 at idle is too low.
AaronSEIA
 

[old]

2 common reasons for that problem are incorrect oil filter I use WIX57011 filters or the filter tube that goes up into the filter being missing due to the fact it stayed on the filter when a person changed oil
 

[Bobby 9891]

I changed the oil filter-because it was painted over but it had the fram C159 on it & the tube was there. The gauge looks new.
 

[old]

My have a bad new gauge or the wrong gauge. The A/C oil systems are low pressure systems so having a gauge to reads say 0-30 is incorrect and will give false readings so you need the correct A/C type gauge. Even when brand new the engine is lucky to have mush if any more then 15PSI
 

[Dave DelDebbio]

I had to clean out the tube from the filter to gauge. when I got one of my tractors, seamed the previous owner didnt like changing oil and the tube had gunk in it..