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Pre War / 1932 W32-6 running problem
« on: 04 July, 2017, 22:00:05 »

Im looking for some help with my 1932/33 BSA W32-6 500cc side valve.

When I attempt to start the bike for the first time after a week or so it starts first time but only runs for a few seconds before cutting out. After this it is difficult to start; turn the petrol tap off and leave it for a few minutes and it will run again for a few seconds.

When I tickle the carburettor some times fuel comes spurting out the top of the float chamber (type 64/079). The carburettor is a Amal 6/112 fuel is seeping out of the primary air holes as it should, which shows fuel is getting through.

How do I know if this issue is relate to the pilot air screw, throttle stop adjusting screw, advance retard ignition lever or air valve lever.

What do you think the problem is? How can I diagnose the problem and how do I get it to run reliably?

If you have experience of working with this type of vintage bike I would love to hear from you. Thank you for any advice.

Ive taken resent ownership of the bike and here is a list of the jobs Ive done.

   Cleaned out the tank and relined it with a professional kit.
   New petrol tap
   Cleaned the Amal carburettor (Amal 6/112)
   Replace the float chamber on the carburettor because it had a crack then broke
   Changed the engine and gear box oil

I live in the Black Country, Cradley Heath

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