bowdog Posted February 15, 2011 Report Share Posted February 15, 2011 I have a 2004 Yamaha R6 that is running a little rough at stop lights "when it wants too"... What happens is when i come to a stop light my RPM's fluctuate from 1000 down to 200 and almost wants to stall (only every now and then). I am being told maybe i need my valves adjusted? Talked to the people that took over Hines MotorSports on 23 and they told me about $300. Anyone have any ideas if this is where i should start, and if it is, is $300 a fair price? Quote Link to comment Share on other sites More sharing options...
FZRMatt Posted February 15, 2011 Report Share Posted February 15, 2011 I have a 2004 Yamaha R6 that is running a little rough at stop lights "when it wants too"... What happens is when i come to a stop light my RPM's fluctuate from 1000 down to 200 and almost wants to stall (only every now and then). I am being told maybe i need my valves adjusted? Talked to the people that took over Hines MotorSports on 23 and they told me about $300. Anyone have any ideas if this is where i should start, and if it is, is $300 a fair price?I don't know about the problem, but I was at Ohio Motorcycle in Hilliard yesterday and I was told a valve adjustment on my '94 FZR would be about $360. Quote Link to comment Share on other sites More sharing options...
gixxie750 Posted February 15, 2011 Report Share Posted February 15, 2011 It does not sound like valves to me. Sounds like a fuel problem or electrical problem Quote Link to comment Share on other sites More sharing options...
natedogg624 Posted February 15, 2011 Report Share Posted February 15, 2011 doesn't sound like valves at all. valves would be a little more consistent and predictable.sounds similar to what my old carb'd bike did.do you have pc3? unplug it if you do and see if anything changes. Quote Link to comment Share on other sites More sharing options...
bowdog Posted February 15, 2011 Author Report Share Posted February 15, 2011 (edited) Thanks, this problem started at the end of last year while riding in 70 degree temps and i have not had it out yet this year... Another thing is when i am out riding hard with the boys it does it much more often, and when i have the girlfriend on the back and am riding easy it doesnt seem to happen as much?!? I have a M4 full system with a power commander and velocity stacks... The only thing i have done so far is replace my spark plugs and obviously it did not help. i appreciate all the help!! Edited February 15, 2011 by bowdog Quote Link to comment Share on other sites More sharing options...
bowdog Posted February 15, 2011 Author Report Share Posted February 15, 2011 Ok thank you, when it warms up i will try to adjust... just hate to take to a shop and just let them do whatever and it end up costing me thousands when it was something simple i could have done myself. Quote Link to comment Share on other sites More sharing options...
natedogg624 Posted February 15, 2011 Report Share Posted February 15, 2011 sounds fuel related now. Quote Link to comment Share on other sites More sharing options...
bowdog Posted February 15, 2011 Author Report Share Posted February 15, 2011 Natedogg if it is fuel related, could it be something in my power commander that would fix itself by unplugging and plugging back in? Quote Link to comment Share on other sites More sharing options...
ohdaho Posted February 15, 2011 Report Share Posted February 15, 2011 You can eliminate the PC as an issue by disconnecting the PC and reconnecting the OEM harness to the injectors. Leave the battery disconnected for a few minutes to reset the ECU and see if the same issue occurs with the OEM setup. Quote Link to comment Share on other sites More sharing options...
natedogg624 Posted February 15, 2011 Report Share Posted February 15, 2011 that would be the way to see if its PC related or not, unplug it like ohdaho posted above. Quote Link to comment Share on other sites More sharing options...
bowdog Posted February 15, 2011 Author Report Share Posted February 15, 2011 (edited) ohdaho not to be completly retarted, but if i hook back the OEM settings with the exhaust and stacks wont it cause the bike to run rough? Edited February 15, 2011 by bowdog Quote Link to comment Share on other sites More sharing options...
natedogg624 Posted February 15, 2011 Report Share Posted February 15, 2011 it'll be a little off, but it shouldn't be as bad as what you were feeling. Quote Link to comment Share on other sites More sharing options...
ReconRat Posted February 15, 2011 Report Share Posted February 15, 2011 (edited) A "hunting" idle is a symptom of a lean fuel condition. Or as Issac's Papa said, a vacuum leak. Same difference. Too much air or not enough fuel. A vacuum leak can quickly go to an engine stalls condition.edit: This might be something that goes away when it warms up outside. Or not...A too tight valve adjustment is similar, but it would also run a bit off at higher rpms, and not just at idle.And not likely in cold temperatures, it's usually a problem at higher temperatures. Edited February 15, 2011 by ReconRat Quote Link to comment Share on other sites More sharing options...
bowdog Posted February 16, 2011 Author Report Share Posted February 16, 2011 thanks, have not rode bike this year all riding and acting up was done last year in warm weather probably around 70 degrees... Is there an easy way to trace to see if it is a vacumn leak? Quote Link to comment Share on other sites More sharing options...
bowdog Posted February 17, 2011 Author Report Share Posted February 17, 2011 Sweet!! I live in Reynoldsbug and am more than willing to pay someone that knows what they are doing vs me messing something up!! Let me know when you would have some time to check it out?!?!? Quote Link to comment Share on other sites More sharing options...
cOoTeR Posted February 17, 2011 Report Share Posted February 17, 2011 Where did you get the tune for your pc? Quote Link to comment Share on other sites More sharing options...
bowdog Posted February 17, 2011 Author Report Share Posted February 17, 2011 It was done by the previous owner before i purchased the bike out of Kenntucky. I have had the bike for three years with no problems now this started... Rode the bike around the neighborhood last night and it is doing the same thing that is was when i put it up last year. Quote Link to comment Share on other sites More sharing options...
cOoTeR Posted February 18, 2011 Report Share Posted February 18, 2011 Might want to look into getting a custom tune done on a dyno. Maybe come out to the April dyno day and see if its off. Quote Link to comment Share on other sites More sharing options...
jhaag Posted February 18, 2011 Report Share Posted February 18, 2011 you may check your clutch adjustment. if the cable has stretched it will not fully disengage and drag the engine down. Quote Link to comment Share on other sites More sharing options...
beezer Posted February 19, 2011 Report Share Posted February 19, 2011 I have a 2004 Yamaha R6 that is running a little rough at stop lights "when it wants too"... What happens is when i come to a stop light my RPM's fluctuate from 1000 down to 200 and almost wants to stall (only every now and then). I am being told maybe i need my valves adjusted? Talked to the people that took over Hines MotorSports on 23 and they told me about $300. Anyone have any ideas if this is where i should start, and if it is, is $300 a fair price?Yours does not sound like valves but is this really what it costs for a simple valve adjustment? I know the shim under bucket is more trouble than screw and locknut but WOW!. I can do the valve adjustment on my Guzzi with common hand tools and .75 hour labor. Quote Link to comment Share on other sites More sharing options...
bowdog Posted February 20, 2011 Author Report Share Posted February 20, 2011 Checked clutch and everything seems to be as it should... If there is someone that is interested in looking at this problem for me please let me know? Quote Link to comment Share on other sites More sharing options...
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