krauss4 Posted May 19, 2010 Report Share Posted May 19, 2010 got a 4 mill cub 35mm carbs idles when i first start it up but wont idle at all after its hot whats up Quote Link to comment Share on other sites More sharing options...
pr0blumz Posted May 19, 2010 Report Share Posted May 19, 2010 Are the carbs in sync? How many turns out are the air mixture screws? Quote Link to comment Share on other sites More sharing options...
locogato11283 Posted May 19, 2010 Report Share Posted May 19, 2010 we need more info. pipes, intakes, air filters, reeds, main jet, pilot jet, air screw?! Quote Link to comment Share on other sites More sharing options...
J-Madd Posted May 21, 2010 Report Share Posted May 21, 2010 None of mine idle for shit. If they do idle when I set the the carbs up, I change it (at the carbs) so that they don't....... and sometimes I'll leave the cable adjuster on the throttle housing loose enough that I can idle it up after it gets warm, then back down if its cold.. I always had that same problem, that it'll idle to the moon when cold, then won't idle for shit when warmed up. If i mess with the air screws to try to fix the problem, then the weather (air density) changes - the idle changes too. This is on alky, though - and drag race only. Quote Link to comment Share on other sites More sharing options...
krauss4 Posted May 21, 2010 Author Report Share Posted May 21, 2010 i have small bore shears inframes 35mm keihns boss intake clean up port job 4 degrees tming advance Quote Link to comment Share on other sites More sharing options...
tiffnaub Posted May 22, 2010 Report Share Posted May 22, 2010 i have small bore shears inframes 35mm keihns boss intake clean up port job 4 degrees tming advance mine has tuned and it will only idle for 5 seconds or less but you really dont want it to idle for to long stay on the pipe it a 2 stroke Quote Link to comment Share on other sites More sharing options...
krauss4 Posted May 22, 2010 Author Report Share Posted May 22, 2010 its just annoying it wants to die if im not on the gas after its hot Quote Link to comment Share on other sites More sharing options...
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