flynlow
FRIEND
Fowler, Ks
1798 hours on 0-290. This engine has always pumped 30lbs at idle and 78 lbs at any rpm over 1700.
Last week I noticed 55 lbs at cruise and after landing It showed 15 lbs at 500 rpm idle.
I thought maybe debri under ball and spring or gauge problem. I changed oil and the screen was clean except for very small amount of carbon.
I put a mechanical gauge on port by screen and it showed 80 lbs of pressure with 80 degreetemp oil while the gauge showed 50 lbs. Ok bad gauge, I was going to call Wag Aero and invest in a new gauge Monday.
This afternoon I cranked up the cub and was going to confirm the pressures with hot oil...Now everything is back to normal 30+ lbs at 500 rpm and 78 lbs pressure at 1700 rpm with 180 degree oil. ????????????
? crud in oil line to gauge?? any thoughts?
Last week I noticed 55 lbs at cruise and after landing It showed 15 lbs at 500 rpm idle.
I thought maybe debri under ball and spring or gauge problem. I changed oil and the screen was clean except for very small amount of carbon.
I put a mechanical gauge on port by screen and it showed 80 lbs of pressure with 80 degreetemp oil while the gauge showed 50 lbs. Ok bad gauge, I was going to call Wag Aero and invest in a new gauge Monday.
This afternoon I cranked up the cub and was going to confirm the pressures with hot oil...Now everything is back to normal 30+ lbs at 500 rpm and 78 lbs pressure at 1700 rpm with 180 degree oil. ????????????
? crud in oil line to gauge?? any thoughts?