Hi, I have ducato 4x4 with 170d engine (xn1tacp), it seems to be very rare. Recently I have been struggling to find valve clearance measurments, 0,1mm and 0,25 mm but not sure if that s correct. I would appreciate any manual or data about that engine and gearbox in that car. I need to change 4th gearwheel as it makes sound, mechanic who was restoring the gearbox changed some wheels but could not find the 4th and said its teeth were lengthened and causing the noise.