Hi have a 1990 ducato motor home 2.0,petrol and carburetter,getting a serious vibration when I accelerate,I can feel it though the steering wheel,no vibration on tick over all cylinders are firring and no oil on spark plugs timings fine could be the carburetor or something else. john

Hi,

Check that the driveshafts are still firmly held in their sockets in the gearbox. I once had one of the circlips let go; the shaft didn't come right out but was loose enough to set up a vibration & knocking.