We changed the 2 engine racor filters today. The 10 micron old filters showed vacuum pressure of 4 on the scle, the yellow region starts at 6. The old filters had been in use for 18 months, they looked somewhat stained with minimum debris. Installed new 10 micron filters, ran the engines fir a few minutes vacuum pressure now shows 5 and 4.5 on the scale so basically unchanged or worse. Racor information recommends changing the filters at 6-8 on the scale. We change them every year or 18 months based on how much use.
Should we have seen a drop in the vacuum pressure with the new filters?
Thank you in advance for your comments or ideas.
Raylee
Should we have seen a drop in the vacuum pressure with the new filters?
Thank you in advance for your comments or ideas.
Raylee