Page 30 - Demo

Page 30.Alvis Three Litre Shop Manual - T.A. 21 and T.C. 21Floodiingg ffromm Floatat Chamb amber or Mout uth off JJettFlooding may occur due to a punctured or petrol-laden float, or to dirt between the float chamber needle valve and its seating. To remedy either effect the float chamber should be removed, and the necessary cleaning, float replacement or repair effected.DDiirtt or Watater iin CaarbuburettttorIf trouble due to this cause is suspected the float chamber should be examined and cleaned out. If excessive water or foreign matter has been present it is possible that the jet has become choked. Before removing the jet and its associated parts for cleaning the following expedients may be attempted.The jet should be dropped to its fullest extent, the suction chamber and piston removed, and the suction chamber alone replaced. The main inlet should then be obstructed and the engine rapidly but briefly turned over by hand or by the starter. This operation subjects the jet to a high degree of suction which will probably result in any foreign matter being drawn out both from the jet and from the adjacent fuel passages. If it fails to do so, however, the jet and associated parts must be removed for cleaning.The Cleaaniingg off Fiiltter Thimb imble Gauauze off Pettrol InletA thimble shaped gauze filter is provided in the petrol inlet of each carburettor. Detach the petrol pipe by removing the screwed union, freeing the petrol pipe to the float chamber lid, when the filter will be found to be accessible for removal and cleaning. It is advisable to carry out this work at regular intervals.