Originally Posted by
p-40lover
well l picked up a basically new plane 5 flights... problem is l can get the engine to run over 74000 an now its dropped down to max 55000...checked filters they are ok..checked uat looks fine no kink in fuel lines...lost as to what to check..max is at 100000 low 32000 pump is at 960..never touched any setting other then learn rc..I'm so running jeti...an a 3s life battery...any suggestions
Does the pump PW rise to 960 and just sit at that value? This sounds like a pump problem.
Can you share pics of the fuel system (suction & pressure)? External vent, vent lines, delivery, filter, couplers, etc... What size and type of tubing is being used? Have you tried to manually run the pump into a catch can? To visually inspect that fuel is being delivered well? Did the previous owner have it sitting a while? Perhaps try to run a large amount of fuel through the pump in a closed loop.
That is where I would start. But it sounds like a pump problem.