Hey guys, recently I did the valve clearances on my FZR, when putting everything back together I couldn't exactly get the notches lined up perfectly so I settled with about a millimeter of thinking that it couldn't miss a whole tooth. I had the bike running on notch 5 (richest) before the clearances but when I started her up she blew some white smoke and was a bitch to start, I thought the idle mixture was set too lean so I had a fiddle and managed to get her started, at this stage she started showing symptoms as if it was flooding but white smoke was coming out of the exhaust. I took out the plugs and they were fouled as, it was obviously flooded so I take the carbies out and move it to notch 4 thinking that now the clearances were correct she needed to run at 4. Now, this is where it gets interesting. I start her up, rev it to 8K and it sounds normal, bit of white smoke. I let her drop to idle and blip the throttle a few times to determine if she's running rich or lean, sweet, goes back to 3K perfectly and doesn't fluctuate up or down. It's running solid as a rock and can't stall it even if I try. So... I switch her off... Start cranking her over for another start... *cough*, *splutter*...flooded. Now, this is a bit weird because the bike isn't running rich as it's actually puffing out a bit of white smoke, I'd say it's running more lean that it is rich but it's flooding. Now, could this be late valve timing? The valves, at extremely low revs (Like when it's flooded) sound irregular, it's like an irregular tapping sound instead of the regular clutter I was used to before. Thanks a lot guys, simple question but I felt like writing about it. I have a real good feeling I'm down to the end of this, spent bloody weeks on the thing.
Any ideas? Bike is running lean but it floods, float levels are all fine but someone mentioned it might be a needle not seating properly and letting fuel in.
i think this is a question for FZRdude or koma or dave. i couldnt help you with this FZRDUDE KOMA DAVE .YOU ARE NEEDED!! (hoping they will be like superman and hear my pathetic shrieking)
Personally, I'd get back in there and recheck the valves and reset the cam timing. Everything should line up. It did before you took it apart, it should when it goes back together. Even "A Little Off" is incorrect and it will show in poor performance or, god forbid, damage. Hayden, I hear just about everything but my wife bithcing.
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The timing marks need to exactly lined up.. I seem to remember putting mine back together and putting the tensioner back in and the marks didn't line up once the slop was gone... so it had to be moved one tooth. The white smoke is a bad sign... burning oil ! Just to confirm that have a smell of the exhast fumes when the smoke comes out. If you are in the northern hemisphere and it is cold/winter it could be steam which normally comes out the the exhaust as it warms up. It is caused as water vapour condenses in the muffler as it cools down after being ridden.
LOL <!-- s:roll: --><img src="{SMILIES_PATH}/icon_roll.gif" alt=":roll:" title="Rolling LoL" /><!-- s:roll: --> I've been helping on and off giving advice for this bike over the course of the last few weeks. As Tim said, if it's not the valve timings then it's something far more serious - so lets work on the assumption that the valve timings are off by one tooth on one of the cam's. <!-- s --><img src="{SMILIES_PATH}/icon_smile.gif" alt="" title="Smile" /><!-- s -->
Turns out it was the valve timings, valves sound good and regular. Bike is running lean (white smoke) at low revs but rich (black smoke) at higher revs and won't go past 6K RPM in gear (Revs to 19K in neutral) but I suspect it's just the fuel idle mixture screws.
