First significant post after purchasing an S7 w 912iS (N52LR) a few months ago. I have been putting some good flight time in and getting comfortable with the plane. Love it so far. I have been flying since 79 with time in many planes, but primarily an SR22 I sold a few months ago. I really like this kind of flying.
A couple of weeks ago shortly after takeoff I got a fuel high pressure warning. At the time I had the main pump running and full power. I throttled back and it bumped up to the red and the Lane A light came on solid. Shortly after the Dynon suggested to land the plane. I was not far from the runway and landed without incident.
I was able to communicate with the builder and review the fuel system. The filter system is relatively new based on the recommendation from Kitfox/Rotax. It was installed in March of this year and has somewhere near 30 hrs on it.
I found what looked like an oil drip coming from the fuel pressure sensor. I was able to pull both fuel filters. It was kind of a mess, could not figure out how to drain the system to keep everything from leaking when disconnected. I let the large post pump filter drain as best I could and captured the fuel. There was some very fine particles suspended in the fuel. I lightly blew in the end and it held pressure for a couple of seconds then gave way. It seemed clear after that. I could not see a way to open the filter. When pulling the pre-pump filter it looked pretty clear.
I put everything back together and checked the pumps. Everything seemed to be fine. The pressure holds around 44-45. I did a full power start / roll out and pulled the cowl. No leaks. Then took it up in the pattern for 20 minutes. All good.
With all that said I have a few questions for the experts.
1) Should I replace the post pump filter? Does anyone know the replacement?
2) That seems like a very short time for the filter to get stopped up, assuming that is the issue. Anyone else seeing this?
3) I am assuming the post pump filter is the source of the trouble. Anything else it could be?