For all those pump experts out there:
I flew my Legacy down to Monterey few days ago (Thanks to Ralph Love for being such a gracious host). I noticed that my up pressure got to 2000psi, I assume due to heat, it was warm. I cracked the dump valve and it was back to the usual 1500. No issues on the low side when the gear was down - usual 600psi or so. Today flying back to Bend, took off out of Gnoss field about 105 on the ground. In cruise at about 14,500, I noticed the up pressure was about 1200 and would slowly drift down to 900 at which point the pump would come on for less than a sec. Seemed like it cycled like this about 4 or 5 times in the 2 hr flight.
So I assume I have an internal pump or dump valve leak and I haven't tried to investigate, but wonder what people thought. Note that I, unlike a number of you, haven't had this issue before. Could the pressure spike have done something? blown a seal?? How would you go about sorting it all out.