banshee0818 Posted August 19, 2011 Report Share Posted August 19, 2011 Hey guys, I have a 1988 Banshee that I bought last year and ended up melting down 15 minutes after I bought it (bad day). I was able to help out the guy who rebuilt it for me and learned a lot, but he isnt currently able to help me work out the bugs in it, It runs great after warming up, but it starts extremely hard. Ive searched the forums and haven't found a guy with a close enough setup to me to copy his jetting, which I think it is. Here are my modifications, Bills Pipes K&N pods Boyesen Reeds A boost bottle My jetting is 320 mains, and 27.5 pilots, and my air/fuel screw is out 1.5 turns. I am located in Saginaw, MI so about 600ft elevation Any know-how or insight is appreciated! Quote Link to comment Share on other sites More sharing options...
dcalsv02 Posted August 19, 2011 Report Share Posted August 19, 2011 Hey guys, I have a 1988 Banshee that I bought last year and ended up melting down 15 minutes after I bought it (bad day). I was able to help out the guy who rebuilt it for me and learned a lot, but he isnt currently able to help me work out the bugs in it, It runs great after warming up, but it starts extremely hard. Ive searched the forums and haven't found a guy with a close enough setup to me to copy his jetting, which I think it is. Here are my modifications, Bills Pipes K&N pods Boyesen Reeds A boost bottle My jetting is 320 mains, and 27.5 pilots, and my air/fuel screw is out 1.5 turns. I am located in Saginaw, MI so about 600ft elevation Any know-how or insight is appreciated! Stock carbs, im assuming....If so, have the carbs been cleaned thoroughly? I would try that because it sounds like your jetting (as long as you have stock carbs) is pretty close. Is it ported? I would maybe go down on your pilot jet. no less than a 25. Quote Link to comment Share on other sites More sharing options...
fastbanshee8 Posted August 19, 2011 Report Share Posted August 19, 2011 I would maybe go down on your pilot jet. no less than a 25, NO WAY IN HELL. Most of the time, hard starting is caused by a lean issue, and a lean issue can lead to a melt down. Try going up to a 30 on the pilots, and see if it starts any easier. Quote Link to comment Share on other sites More sharing options...
banshee0818 Posted August 20, 2011 Author Report Share Posted August 20, 2011 (edited) Yes, stock carbs, I will buy both 25 pilot and 30's and see if it helps. My plugs are always a real dark brown, not like cardboard as it is supposed to be. That's why I'm thinking its probably rich. Also, it was ported by the guy before me, and I had the carbs all torn apart and cleaned. The porting is suspect though. Edited August 20, 2011 by banshee0818 Quote Link to comment Share on other sites More sharing options...
sleeper06 Posted August 20, 2011 Report Share Posted August 20, 2011 leave the pilots try 300 mains needles 4th clip and make sure the carb bowls are on rite sides,there is a tiny jet in the bottom of the bowl for the choke side carb it will make it very difficult to start Quote Link to comment Share on other sites More sharing options...
AKheathen Posted August 20, 2011 Report Share Posted August 20, 2011 go out to your bike, like as soon as you read this, or before replying, and look at your left carb(sitting on the bike) and look at the carb bowl. there shold be a little brass bead on one carb facing the cylinder. that bowl needs to be on the left carb. if you do not see it, check the right. if it's on the right, switch it. having a boost bottle, you should be at a 27.5 pilot in the summer, and 30 in the winter. really, you should ditch it, but i won't go into the legendary boost bootle sucks debate, so you can take from that comment what you want. a stock cross-over tube is best imho. i never took the time to memorize what bills pipes like, because that are just pipes that are better than stock, but not special, no offense. however, most pipes in your scenario will like 260-300, maybe 310. range and the temps/humidity you ride will varry what it likes. another thig- if it melted down, and you have troubel getting it started, then it leads me to belive that the choke tube may be missing, or unhooked. there should be a vacuum line connected to the nipple on the other sice of the choke on the left carb, and it goes directly across to the nipple on the right carb, no bands or deviation, strait across. without this tube, not only will the choke not work, but the right carb will suck air through the hole and lean the right piston to melt-down. another thing- when adjusting the airscrws, you want the motor at operating temperature. small adjustments, like 1/4 turn or less untill you get it running good. once adjusted right, you need the choke to start a cold engine, and it takes between 1-3 kicks. Quote Link to comment Share on other sites More sharing options...
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