I have just restored a 1937 16h but can't get it to fire! The ignition seems fine (good spark) but the plug does not get wet at all. petrol is definately coming through to the carb but not being sucked into the chamber. it gets spat out of the mouth of the carb though. I am not totally confident that I have got the valve timing correct - could that likely be the problem?
is it possible to set the cam wheels by counting the number of teeth from a given point when the piston is in a certain position (ie TDC) as I seem to be having great difficulty correctly setting the Timing?
As a rough guide - how many turns out should the mixture screw be set please? 276/1be carb.
Also the circular cap which hold the spring in the timing chest continually dribbles oil through its centre when kicking over the bike - Is it supposed to have a small hole in its centre please?
Thanks for your help
Gary.
16H settings.
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Hi Gary,
At the very top right hand side of this page there is a search bar. If you type in 16H Valve timing, you will find earlier posts for setting the valve timing, but get back if it still isn't fully explained.
The screw cap retains the big-end feed jet and spring, so no, there shouldn't be a hole. If you cannot find another one you can seal it with solder or 2-pack metal filler or even Araldite.
As a starting point, screw the mixture screw fully home then undo one and a half turns and when the engine is fully warmed up, try a small adjustment either way.