Jorge_pg Posted August 22, 2017 Report Share Posted August 22, 2017 Quick and simple as possible can't find a post that has the answer I'm looking for! I can't get the bike to idle RIGHT what so ever and have tried everything I can possibly think of and am I out of ideas I'll try to be as detailed as possible. Mods Fresh, stock cylinder 4mill dune port HJR t5 pipes Cool head domes cut for 91oct sea level +4 timing stock carbs, none of tors crap, crossover tube , k&n pods with outter wears, vforce 4, current jetting 30pilots Needle One above middle clip 330 mains So mid and top are great plug chops show it too, but I've never been able to get the idle right, when it's cold it start 1-2 kick right up no choke and then it warms up and acts rich, Boggs and has to clear up before it revs up. It will idle for a minute or 2 then die every time! I've tried going down to 27.5 and 25 and somehow does the same shit, when I open and close air screws I don't notice a difference, slides are in the right way choke tube is there, sync carbs, I've leak tested and no leaks, reeds are new less than 3 months on them, I tried turning the idle screws in all the way and helped a little bit but still not right , and carb body is shaved as low as could for the same reason that It wouldn't stay idling, I've even checked the pick up gap on the fly wheels and it's good. The last things I've done is full tear apart the carbs to clean and nothing float is set 21mm any help is much appreciated! Quote Link to comment Share on other sites More sharing options...
special06shee Posted August 22, 2017 Report Share Posted August 22, 2017 Do you have the idle set two low? Quote Link to comment Share on other sites More sharing options...
Ayesully810 Posted August 22, 2017 Report Share Posted August 22, 2017 18 minutes ago, Jorge_pg said: carb body is shaved as low as could for the same reason that It wouldn't stay idling what does this mean? are you talking about the part where the idle screw goes in? you shaved that down as far as possibly so you can crank that screw in more, is that what you mean? also you said you turn the screws in and it helped. have you tried a 32.5 or 35 pilot? Quote Link to comment Share on other sites More sharing options...
Jorge_pg Posted August 22, 2017 Author Report Share Posted August 22, 2017 When I say carb body I mean where the idle screw goes and I have the idle screws turned in all the way Quote Link to comment Share on other sites More sharing options...
Jorge_pg Posted August 22, 2017 Author Report Share Posted August 22, 2017 10 minutes ago, Ayesully810 said: what does this mean? are you talking about the part where the idle screw goes in? you shaved that down as far as possibly so you can crank that screw in more, is that what you mean? also you said you turn the screws in and it helped. have you tried a 32.5 or 35 pilot? Quote Link to comment Share on other sites More sharing options...
Jorge_pg Posted August 22, 2017 Author Report Share Posted August 22, 2017 11 minutes ago, Ayesully810 said: what does this mean? are you talking about the part where the idle screw goes in? you shaved that down as far as possibly so you can crank that screw in more, is that what you mean? also you said you turn the screws in and it helped. have you tried a 32.5 or 35 pilot? I feel 32.5 and 35 are too big for my set up, HJR recommend me with 27.5 for the port job Quote Link to comment Share on other sites More sharing options...
Ayesully810 Posted August 23, 2017 Report Share Posted August 23, 2017 13 minutes ago, Jorge_pg said: I feel 32.5 and 35 are too big for my set up, HJR recommend me with 27.5 for the port job wouldn't hurt to try lol I have 37.5s in my stock carbs on my 421 4 mil. Quote Link to comment Share on other sites More sharing options...
Jorge_pg Posted August 23, 2017 Author Report Share Posted August 23, 2017 1 minute ago, Ayesully810 said: wouldn't hurt to try lol I have 37.5s in my stock carbs on my 421 4 mil. Wow that's big where are your air screws with that? I'm willing to try it but it would have to be in a day to have to order them from local shop Quote Link to comment Share on other sites More sharing options...
Ayesully810 Posted August 23, 2017 Report Share Posted August 23, 2017 my jetting is perfect too my air screws are at 1.25 turns out 37.5 pilot, 360 main, and 4th clip on vitos needle (same needle as Toomey basically) Quote Link to comment Share on other sites More sharing options...
Jorge_pg Posted August 23, 2017 Author Report Share Posted August 23, 2017 (edited) 3 minutes ago, Ayesully810 said: my jetting is perfect too my air screws are at 1.25 turns out 37.5 pilot, 360 main, and 4th clip on vitos needle (same needle as Toomey basically) Wow, I'll order a pair of 32.5 tomorrow then! Hope fully other people chim and have other ideas too. I'll also try contacting HJR tomorrow as well Edited August 23, 2017 by Jorge_pg Quote Link to comment Share on other sites More sharing options...
yamaha04 Posted August 24, 2017 Report Share Posted August 24, 2017 have you tried taking the air screws out. cleaning them, and blowing the passage out with air. possibly clogged and you cant dial in your mixture to idle Quote Link to comment Share on other sites More sharing options...
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