I can understand the power loss if an intake valve isn't being sufficiently opened, but what's the reason for the higher fuel burn? If a valve isn't opening right, then presumably less air and fuel gets drawn into that cylinder, but the fuel efficiency wouldn't seem to be diminished. Is it just that the resultant amount of fuel/air charge in that jug is so low that it produces even less power than would be expected from the fuel used? (Behaving like a cylinder with a very low compression ratio)I just had to overhaul my o-320. It had pretty severe inlet cam wear which impacts 2 of the 4 cylinders. I measured that it lost 0.15 inches. It felt very low on takeoff performance, and highish fuel burn (9.5 vs 8).
What would you estimate my power loss would have been?