notsed Posted September 30, 2008 Report Posted September 30, 2008 i just got my motor back in the shee thank god, anyway it started up right away and it seems lean at idle, i have to barely hold the choke to make it idle. is this because its new, or because i have the timing at 4-5 now? the only thing that changed durring rebuild was the timing plate, its got fmf high rev pipes, toomy 2 into 1 filter (no box), no tors, other than that its stock. the jetting is, 280 mains, stock pilot,middle clip at 600 feet above and 80* does this sound right? it ran good before. any info would be sweet Quote
tapout94 Posted October 1, 2008 Report Posted October 1, 2008 2 into 1 filter or 2 into 1 carb?? Quote
Wildcard2 Posted October 1, 2008 Report Posted October 1, 2008 you may have to adjust the carbs a little. were they rebuilt? also check your spark plugs they will tell if you are rich or lean. Quote
notsed Posted October 1, 2008 Author Report Posted October 1, 2008 2 carbs 1 air filter. the plugs are soaked but probly from me holding the choke to make it idle. it must be pluged pilots ill take them appart and see Quote
dajogejr Posted October 1, 2008 Report Posted October 1, 2008 With no airbox, you're going to need a bigger main jet. Start with 350 and work your way down (Keep in mind, winter is coming...and you're going to have to jet up a few sizes if you jet it for 60 to 80 degree weather...) I ran 27.5 pilots on stockers when I had similar mods and similar temps/elevations. Quote
notsed Posted October 1, 2008 Author Report Posted October 1, 2008 well the prob is only at idle, would mains cause a lean idle? it ran great before the piston shatterd i even ran the same jetting last winter and it ran perfect but a lil rich in the summer, it didnt melt down. is it possible the choke lever is leaking air by it? it doesnt stay out on its own Quote
Tim Potteiger Posted October 1, 2008 Report Posted October 1, 2008 If you are running stock needles, 280 is too lean all the way through. You should be at least 290, and with no airbox most likely 300 or even 310. Do you have TORS still? Quote
notsed Posted October 1, 2008 Author Report Posted October 1, 2008 no tors and i dont have stock needles, i think they say n57 on them Quote
notsed Posted October 1, 2008 Author Report Posted October 1, 2008 well i just had it running again and the left cylinder is running hotter than the other. is it possible to put the stator side crank seal in backwards? im going to pic up some starter fluid and see if i can pin point a leak. any other ideas? Quote
treybird Posted October 1, 2008 Report Posted October 1, 2008 mine was doing the same thing once but i had to resnyce my carbs and that fixed the problem Quote
notsed Posted October 2, 2008 Author Report Posted October 2, 2008 no i dont think its that. when i try to rev it up it pops and throws flame out the exhaust. really lean, and if i pull the choke to keep it running the other side floods out Quote
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