crash&burn Posted November 30, 2012 Report Share Posted November 30, 2012 The mods first: stock bore, stock stroke, mild port, VF2 reeds, K&N pods, T-5 pipes, cool head 21cc domes, needle on middle notch and seal level. This is all new rebuild and i have down a leakdown with passing results and check for air leaks while i have it running. I have messed with the jets and needle and all the rest, countless times going up on the needle down on the needle up on jets and down on jets and nothing seems to work. The problem is at idle after idle it runs great. It will only fire off when the choke is pulled hot or cold. will not fire and idle with the choke off just kinda sputter out. it only runs for about five seconds without choke and dies. so i fire it up with the choke pulled up idle a bit higher than idle and runs fine besides the high idle. turn the choke off and it instantly starts to bog down and sputter out and die. if i am fast enough i can kill the choke and run the throttle and hold the idle high enough to keep it from bogging out. Every time I pull the plugs they are black and soaked but always spark. So what i am missing here, where should i look what needs adjusting. Quote Link to comment Share on other sites More sharing options...
JKJK Posted November 30, 2012 Report Share Posted November 30, 2012 Your pilot circuit is lean.Go up with the pilot and in with the air screws or both.You should have jjh needles,45-48 pilets,+155-162 mains for your setup. Quote Link to comment Share on other sites More sharing options...
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