Well I put 5w-30 motor oil in it and this morning it primed itself within 18sec and it was 15 degrees outside. Conclusion I had to thick of oil and it's a 55 year old compressor that's never been rebuilt and it's just a little worn out but it's still working. I also know that you're supposed to...
Maybe the oil is just too thick? I used 30wt and added a bit of lucus addititve... I'll clean out oil and put in some thin stuff tonight.... it's also been cold in the 30s latly.. that might prevent an old worn out pump from priming if there is nothing else
Yes pressure lubed. .. and this one has the old vein type oil pump that can be spun either direction, I have also double checked that oil pump collar is in the appropriate position for the direction it is spinng.
I'm not sure about a check ball or valve... is there a check valve or ball that will prevent oil pump from priming itself? ... when I had oil pressure I left air blowing out so that it would cycle multiple times and the hydraulic unloader valve seemed to be working well...it sat overnight and...
I got an old quincy 325, I was told it worked so I bought new 5hp motor and it will not get oil pressure... I changed oil "it was very sluggy" cleaned crankcase and oil pickup screen and tube. And then it started getting pressure and operating properly. .. next day it won't get oil pressure at...