tt5th Posted May 15, 2008 Report Share Posted May 15, 2008 Just bought a '99 315 cheaply with the intention of getting it sorted out. The bike in general seems good but at idle and low revs the top end has a metalic tapping noise. Give it some beans and it goes away, sounds spot on in fact. In general it sounds very quiet, no whirring or anything just an annoying tap! I've got super unleaded, 80:1 mix, new air filter, new plug, cleaned ehaust, cleaned carb and its still the same so next will be head off Strange thing is the guy reckoned it had had head work done recently and this is 'sort of' backed up by obviously recent gaskets. I'm hoping it might just be the top end bearing that needs doing, what do you reckon? Where is the best place in the UK to buy parts? I figure worst case I'm going to need a piston kit and a nikosil lining. Quote Link to comment Share on other sites More sharing options...
billytraynor Posted May 16, 2008 Report Share Posted May 16, 2008 Hi A simple fix. Your pilot jet is way too lean. Regards BillyT Quote Link to comment Share on other sites More sharing options...
tt5th Posted May 19, 2008 Author Report Share Posted May 19, 2008 Cheers Billy, I checked out jet sizes but in the end just took the head off. Piston and cylinder were knackered, swapped them over today and she's running tight as a nut! Quote Link to comment Share on other sites More sharing options...
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