I fitted a new-style fuel pump after 5 years trouble-free running on the original pump. This has worked fine for the last two years but I now have a small oil leak from the drain pipe. Anyone else seen this? Do I need another new pump?
It seems that the new-style Corona mechanical fuel pumps may weep a bit of oil out through the pump drain during normal operation. A small quantity of oil apparently seeps past the rubber oil seal on the plunger rod. Here is a pertinent discussion from the CT Fliers' web site: http://ctflier.com/topic/3431-the-inside-of-the-rotax-fuel-pump/?hl=pump