Hi, I drive a 1.3cdti Vauxhall Combo 2006, I have been having power loss problems at low revs recently. While accelerating at low revs I experience a kind of clicking noise from the engine and maybe 25% loss of power followed by a plume of black smoke and a smell through the vents. Restarting the engine always cures this, but does 3/4 times a day during a 40 mile commute. Fault code is telling me it's a fuel rail sensor, does this sound plausible? Cheers, Rob.