Kawasakifreak Posted September 15, 2009 Share Posted September 15, 2009 Hi, Had the head off my FZR foxeye - all back together & fired it up yesterday - running only on cylinders 1, 2 & 3 but not 4. Changed the plug on cylinder 4 tonight but still no joy. Checked & re-checked all connections. Any ideas would be appreciated ? Cheers, Kawasakifreak Link to comment Share on other sites More sharing options...
peterxj600 Posted September 16, 2009 Share Posted September 16, 2009 Is there actually a spark at plug 4? If not it may be as simple as replacing the plug cap on the HT lead or at worst, the coil. P Link to comment Share on other sites More sharing options...
Kawasakifreak Posted September 16, 2009 Author Share Posted September 16, 2009 Is there actually a spark at plug 4? If not it may be as simple as replacing the plug cap on the HT lead or at worst, the coil. P Thanks - checked spark on cylinders 3 & 4 with a diode - good spark on both !? I don't understand why cylinder 4 won't fire ? Kawasakifreak Link to comment Share on other sites More sharing options...
jordanscycles Posted September 17, 2009 Share Posted September 17, 2009 what about a compression test? valves arnt opening or closing properly? have you seen the cylinder 4 spark plug spark? have you ran the bike then taken the number 4 spark plug out and checked that there's petrol on it? Link to comment Share on other sites More sharing options...
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