TROUBLESOME AIR LEAKS

Ellesmere Guardian, Volume LVI, Issue 88, 19 November 1935, Page 2

TROUBLESOME AIR LEAKS

HINTS FOR THOSE WHO CARE

In cases where the behaviour of the engine and an inspection indicate clearly that air leaks and/or faulty fuel supply are present, it is advisable to dismantle the carburettor, and, if it is fitted, detach the inlet pipe. The carburettor should be perfectly clean, with no trace of silt in the float chamber, feed bolts, and screwed caps. The needle valve and the throttle, whether of the butterfly or barrel type, must be free from wear; if toggle levers are incorporated in the float chamber design, it is essential that these work freely and that the pivots are well fitting, and not worn. The float must be sound, as otherwise the fuel lever will be affected, and this will also upset the mixture strength. The actual air leaks can be overcome by a careful replacement of all the copperasbestos gaskets and washers fitted to the inlet manifold and carburettor flanges. It is important that those fitted to the inlet manifold flanges are of uniform thickness, and that all should be well coated with goldsize before replacement. Especial care should be taken to tighten all nuts carefully, each one a little at a time.

If the car is fitted with a suctionoperated type of screen-wiper, or extra air service, the tubing and valves should be checked for cracks and leaks, particularly at the connexion to the manifold itself.