Valko Posted February 27, 2016 Posted February 27, 2016 (edited) My Fazer lately has started to backfire when cold in the morning. Not always but sometimes. Can't sneak out for a blast the missus will hear me see the major problem here Do I need to do some servicing? I mean to the bike not to the missus It has new Iridium spark plugs. I have the feeling all started after I have changed my old air filter with new K&N. Any ideas? Edited February 27, 2016 by Valko Quote
Hoggs Posted February 27, 2016 Posted February 27, 2016 Before you do too much try redex in every tank. Sorted mine out! Quote
eastanglianbiker Posted February 27, 2016 Posted February 27, 2016 the k&n problems shows up again a lot of people have had problems with them in mid range cc bikes for some reason the bikes dont like them if you have still got the standard filter put that back in and see if the problem goes away,as the k&n is more free flowing with air you might need a air correcter kit in the carbs increasing the amount of fuel and reducing the air in Quote
Stu Posted February 27, 2016 Posted February 27, 2016 if its mostly on colder days then chances are its just a cold arse! Quote
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