SOHC.co.uk Forums > CB650

backfire problem?

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kemp2368:
hi all,i have developed a backfire problem on tick over,i have not used the bike for 1 week,and all i have done to it was changed my points cover for a nice shiny one in that week,if i adjust tick over to about 1800 it disappears?so is it over fuelling?? or is it just a bit of crap in the carbs??
any ideas would be really good thanks

florence:
Is it after revving?, could be a leak between downpipe and cylinder head.  Maybe your ignition timing is out.

kemp2368:

--- Quote from: florence on August 07, 2010, 09:33:58 AM ---Is it after revving?, could be a leak between downpipe and cylinder head.  Maybe your ignition timing is out.

--- End quote ---
thanks for the reply,i have only had bike a few months,and i no he put a new exhaust on her,so i will undo all the clamps and re tighten just in case

kemp2368:
problem solved ;D
it was just a fouled spark plug,i replaced with new and not done it since

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