backfire problem?

[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]

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

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
it was just a fouled spark plug,i replaced with new and not done it since