ShyTorque. .. .Your comments are very helpful. During the run up at 1800rpm the fuel pressure stabilises at circa 2.7psi which is near the book figure of 3, but there is no indication in the POH of the what the fuel pressure should be at 2500rpm (climb power.). .. .Anyway, will have it checked - it had crossed my mind that we might have a problem with the gauge or the sensor, but I'll leave that to a qualified mechanic to check out.. .. .Its very helpful to have someone elses opinion before sending her to the workshop.. .. .Many thanks. .. .Feather #3. .. .De Havilland Support are an option, I wished to see first if this was a common experience with Pups, as I don't have many hours on type and the POH is not entirely helpful.. .. .Thaks for the thought. . . . <small>[ 05 March 2002, 11:27: Message edited by: Final 3 Greens ]</small>