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gary0003

Royal Enfield WD/Co Starting problems!!!

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My 1944 WD/CO is a real pain to get running. The carb has been re-built and it is all the correct jets/settings. It seems to flood very easily. Once it is going it runs really well - just a real pain to get it going!

Thanks

Gary.

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If it runs well once going then you have to assume that valve and ignition timing are good and the engine is generally healthy. Poor starting then points towards ignition  - A weak spark.Are the gaps correct in both spark plug and magneto points. Are the points clean in the mag ? A spark at the plug when its laying on the cylinder head may not be any good under compression. A failing condensor,HT windings, dirty HT pickup or sticking points can all lead to a weak spark. Often failing HT windings show up more when the engine is hot.

Once you are used to the bike's preferences for its starting ritual it ought really fire up withing one or two kicks,hot or cold. My Matchless G3l never needs tickling,just air lever closed,a few slow rotations with the valve lifter pulled. A little bit of ignition advance and a long swinging kick and its away,hardly ever more than one kick.

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Just a few thoughts,

have you got the correct retard/advance fitted to the magdyno? There’s a slack and tight version and can be mixed up.

do you leave the engine on TDC? Does it smoke on start up?

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Thanks for all your help. I think I may have solved it - I  checked everything today and and the plug was very sooty and the points had closed up a bit. I have re-set the points, cleaned and gapped the plug and lowered the needle a notch and it started first kick!  Haven't got time to go for a test ride today though.

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How’s it running, I remembered another issue with the carb, there’s 2 different depth nuts. If I remember correctly the incorrect one can cause your issues, especially if dropping the float one notch appears to fix it.

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Hi Chris,

I take it you mean the nut that attaches the float bowl to the carb? How do I know if I have the correct one or not? Haven't yet had the chance to go for another run yet - so I'll let you know.

Thanks

Gary.

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Yes, it’s the big nut that holds the jet block in and the float bowl bolt screws into. I can’t actually remember which is correct.

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It's the short nut on a CO/G/L! The hex is right under the threaded part. The second picture for comparison is the long nut on my Ariel W/NG. (angled carb) Ron

DSCF2937.jpg

DSCF2938.jpg

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