Tuesday 29 January 2013

Jetex carburettor - sticking float

After fixing my inlet manifold gasket I stumbled into another problem. The engine wouldn't start, and then I noticed fuel flooding out of the carb onto the floor. The problem was an apparently commonplace sticking float. It wasn't sticking on the housing, but simply wasn't moving very freely on the pivot pin.

I considered removing the pin and float and sanding the float a little on the hinged faces, as per some ideas on the Lambretta forums. First of all though I though I'd get some WD40 into it and let it stand for a while. This did the trick - the float now falls freely under gravity and rises with the 'tide'.

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