elwilliams13 Posted April 22, 2008 Report Share Posted April 22, 2008 I have a cascade intake looks like the trinity one, 35mm Keihin PWK airstyker. Cylinders have a recreational port on them FMF Fatty's 21cc domes with coolhead +4 timing, It runs great on top and in the middle but at idle smokes like a chimney and plugs are black and wet they clean up after running wide open to a nice tan color. Iv'e tried everything I know. Went from 45 pilot to 35 no change, Changed needles from DEK to EEJ, nothing. Float set at 11mm nothing there. Idles ok with the idle stop screw turned in nearly all the way. Carb cleaned twice. Any thing else anyone can suggest or I'm going to toss it. Quote Link to comment Share on other sites More sharing options...
98_shee Posted April 22, 2008 Report Share Posted April 22, 2008 You may want to try a leaner like an eek needle here's a chart on the needles Quote Link to comment Share on other sites More sharing options...
Snopczynski Posted April 22, 2008 Report Share Posted April 22, 2008 Where is the airscrew set at? Quote Link to comment Share on other sites More sharing options...
elwilliams13 Posted April 22, 2008 Author Report Share Posted April 22, 2008 Airscrew at 1.5 turns out with a 45 pilot. There is no diffrence in the plugs from a 35 pilot to a 45 pilot. Plugs are wet and black. Revs up awesome and the power comes on nice and smooth from about half to full throttle. I got new float and choke plunger. Is there any internal problems that can cause this. It is like there is a problem in the idle circuit alone. Quote Link to comment Share on other sites More sharing options...
Snopczynski Posted April 22, 2008 Report Share Posted April 22, 2008 choke can be messed up or the needle and seat can be bad. Quote Link to comment Share on other sites More sharing options...
elwilliams13 Posted April 22, 2008 Author Report Share Posted April 22, 2008 If the needle and seat where bad would it overflow from the vents? I replaced the plunger part of the choke, Is there more? Quote Link to comment Share on other sites More sharing options...
Snopczynski Posted April 22, 2008 Report Share Posted April 22, 2008 yeah if the needle was hanging open. Quote Link to comment Share on other sites More sharing options...
elwilliams13 Posted April 22, 2008 Author Report Share Posted April 22, 2008 The only other thing I can think of is that my cylinders have the worm holes or boost ports cut into them that lead straight to the transfers. Does this have anything to do with the CV set up as this is always open and flowing. It is the only diffrence in my set up and a stock one. Quote Link to comment Share on other sites More sharing options...
elwilliams13 Posted April 22, 2008 Author Report Share Posted April 22, 2008 The only other thing I can think of is that my cylinders have the worm holes or boost ports cut into them that lead straight to the transfers. Does this have anything to do with the CV set up as this is always open and flowing. It is the only diffrence in my set up and a stock one. After further review I found out they are called boyesen ports towards the bottom of the intake into the crankcase. Quote Link to comment Share on other sites More sharing options...
Snopczynski Posted April 22, 2008 Report Share Posted April 22, 2008 Are your reed petals worn out? I dont run a 2 into 1 carb anymore. My bike with the 28mm carbs makes way more power mid-top. The difference on the low end is only about .6hp for 1400 rpm. Which you shouldn't even be able to notice. Quote Link to comment Share on other sites More sharing options...
elwilliams13 Posted April 22, 2008 Author Report Share Posted April 22, 2008 Got it best suggestion I've heard all year. Thanks. Back to duals then. Quote Link to comment Share on other sites More sharing options...
pabansheematt Posted April 23, 2008 Report Share Posted April 23, 2008 Airscrew at 1.5 turns out with a 45 pilot. There is no diffrence in the plugs from a 35 pilot to a 45 pilot. Plugs are wet and black. Revs up awesome and the power comes on nice and smooth from about half to full throttle. I got new float and choke plunger. Is there any internal problems that can cause this. It is like there is a problem in the idle circuit alone. If you ever figure this out let me know. xXblessedwithdeathXx has the same problem for over a year now we tried all the same stuff. I think he tried every pilot jet they make. He has the same exact problem someone out there has to have an answer. 2 into 1 = headache. stock carbs are better. Quote Link to comment Share on other sites More sharing options...
400rednEX Posted April 23, 2008 Report Share Posted April 23, 2008 i have a better idle and off idle response with both single setups than i did with stock duals. there has to be a problem with the carb. what is the airscrew set at? in is richer. Quote Link to comment Share on other sites More sharing options...
Snopczynski Posted April 23, 2008 Report Share Posted April 23, 2008 the other problem could be the sleeve the needle on the slide runs into. If it wears out it can cause an issue, and the whole carb has to be replaced I believe. Quote Link to comment Share on other sites More sharing options...
elwilliams13 Posted April 26, 2008 Author Report Share Posted April 26, 2008 (edited) The only thing I can think is the cutaway on the slide needs to be leaner(bigger number). I got a 45 now. I need to try a bigger one. Edited April 26, 2008 by elwilliams13 Quote Link to comment Share on other sites More sharing options...
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