1997 Corsa Diesel LS 1.7 When the car was first bought a couple of months ago I commented on a mechanical 'rattling' sound as the engine ran, either at stop or in motion. No-one thought anything of it. I just noticed that if I put my foot under the clutch pedal and lift it ever so slightly, that noise stops. It's as if without touching the clutch, the plates (?) are making slight contact - lift the pedal and it stops. It's a very quiet noise, but I'm sure isn't a good sign. Is it possible to adjust that pedal so it raises a little? I'm not talking about changing the biting point or whatevertheheck I just read about during a Google search. The pedal literally needs to be a couple of millimetres *above* its current resting point.