number52 Posted September 17, 2007 Report Share Posted September 17, 2007 First off, this Banshee is driving me nuts. Would run above 1/4 throttle, so I put a TORS eliminator kit on it, still ran like crap and just wouldn't rev up. The only thing it has are Pro Circuit pipes and a silencer. It had 250 mains in it so I went down to 220 mains and it helped a little, but when I went to ride it still wouldn't rev out. So I took the airbox lid off and then it would rev sometimes. I pulled the needles out and they were set at the second from the bottom so I moved them up to the second from the top setting. Now with the airbox lid off it will run great at 1/2 to 3/4 throttle. And on top end it will run fine then once on top more than 2-3 seconds it will stumble pretty bad. I tried turning the air screw out and it seems to help somewhat, but I can imagine that it is this rich with the jetting I have and the airbox lid on? There is also tons of oil residue coming out of where my pipe and silencer meet. Any thoughts please. Thanks Quote Link to comment Share on other sites More sharing options...
black sunshine Posted September 17, 2007 Report Share Posted September 17, 2007 First off, this Banshee is driving me nuts. Would run above 1/4 throttle, so I put a TORS eliminator kit on it, still ran like crap and just wouldn't rev up. The only thing it has are Pro Circuit pipes and a silencer. It had 250 mains in it so I went down to 220 mains and it helped a little, but when I went to ride it still wouldn't rev out. So I took the airbox lid off and then it would rev sometimes. I pulled the needles out and they were set at the second from the bottom so I moved them up to the second from the top setting. Now with the airbox lid off it will run great at 1/2 to 3/4 throttle. And on top end it will run fine then once on top more than 2-3 seconds it will stumble pretty bad. I tried turning the air screw out and it seems to help somewhat, but I can imagine that it is this rich with the jetting I have and the airbox lid on? There is also tons of oil residue coming out of where my pipe and silencer meet. Any thoughts please. Thanks The airscrew is for setting the idle/pilot circuit, it won't help your top end. Foam filter with the lid on? What are your plugs gapped at? You really should do a plug chop!!! Quote Link to comment Share on other sites More sharing options...
sredish Posted September 17, 2007 Report Share Posted September 17, 2007 First off, this Banshee is driving me nuts. Would run above 1/4 throttle, so I put a TORS eliminator kit on it, still ran like crap and just wouldn't rev up. The only thing it has are Pro Circuit pipes and a silencer. It had 250 mains in it so I went down to 220 mains and it helped a little, but when I went to ride it still wouldn't rev out. So I took the airbox lid off and then it would rev sometimes. I pulled the needles out and they were set at the second from the bottom so I moved them up to the second from the top setting. Now with the airbox lid off it will run great at 1/2 to 3/4 throttle. And on top end it will run fine then once on top more than 2-3 seconds it will stumble pretty bad. I tried turning the air screw out and it seems to help somewhat, but I can imagine that it is this rich with the jetting I have and the airbox lid on? There is also tons of oil residue coming out of where my pipe and silencer meet. Any thoughts please. Thanks Whats your elevation? I would get some 290s, take the lid off, and put the needles at the 3rd or 4th clip from the top and see how it runs. 220 is too lean with the lid on or off. Do that and see how it works. Quote Link to comment Share on other sites More sharing options...
RoostRocket Posted September 17, 2007 Report Share Posted September 17, 2007 Whats your elevation? I would get some 290s, take the lid off, and put the needles at the 3rd or 4th clip from the top and see how it runs. 220 is too lean with the lid on or off. Do that and see how it works. i agree 220 is too lean do what sredish recommended then do a plug chop and that should tell you everything you need to know. :thumbsup: Quote Link to comment Share on other sites More sharing options...
number52 Posted September 17, 2007 Author Report Share Posted September 17, 2007 i agree 220 is too lean do what sredish recommended then do a plug chop and that should tell you everything you need to know. :thumbsup: I've already done plug chops. The plugs look great with the lid off and are soaking wet with the lid on at WOP. Throw the lid on and it just bogs and will only run about 15 MPH. Take the lid off and it still lags big time like it's loading up then bang, the power hits and your gone, then once on top for a couple seconds it starts to stumble a little like it's still a hair bit rich. Quote Link to comment Share on other sites More sharing options...
sredish Posted September 17, 2007 Report Share Posted September 17, 2007 Well, 220 is lean for a piped, no-lid banshee. If it's not then you have some other issues going on, which is possible. Are you sure the carbs are synced properly? Are you sure you don't have any air leaks causing a sporadic issue? What's the largest main jet you've tried thus far? It's all in throttle position. Get the WOT testing done with the main jet and plug checking, then from there work on the needle. Only do one thing at a time and work slowly. I still say, throw a set of 290s in there and see what happens. Quote Link to comment Share on other sites More sharing options...
dajogejr Posted September 17, 2007 Report Share Posted September 17, 2007 Let's back up... Are you using fresh gas, fresh oil...mixed at a normal ratio? (28 to 1 up to 40 to 1)?? Fresh spark plugs? Are you sure the bike has good spark? Without good spark, it really doesn't matter what jets you choose...it'll run like poop. Do you have the carbs slides in correctly? The half moon cutout on the slide should be on the airbox side. Is the small choke tube connected between the two carbs? Put 290s in....220s are WAY lean. Once you check the above...and the carbs check out, it's an air leak or bad spark. Quote Link to comment Share on other sites More sharing options...
RadarRacing Posted September 17, 2007 Report Share Posted September 17, 2007 Thats what I'd say too bad gas/oil mix, plugs, plug boot, electrical, air leak. Quote Link to comment Share on other sites More sharing options...
number52 Posted September 18, 2007 Author Report Share Posted September 18, 2007 Thats what I'd say too bad gas/oil mix, plugs, plug boot, electrical, air leak. I know a lot about carburetors and how they work and how each circuit works. That's why I'm so confused. The bike wouldn't run right at all with the 250 mains in so I removed the airbox and started to get some revs. That means it was too rich. So I dropped to a 220 main and ran better on top and a little better mid, but still took forever to clean out. So I lowered the needles to cut off some fuel on mid throttle, helped out. Looking on line I saw that I was only 1 jet size larger than stock and I was still running rich with the airbox lid off is what made me think something isn't right! I've done all of the above before I started this post. Fuel is brand new VP110 at 32:1 mix Honda HP2. Plugs are new, but are soaking wet with airbox lid on. If it was electrical I don't think it would run good at any RPM range! If it was an air leak then I would be fighting a lean condition. I just purchased a Dyno Jet jet kit and hopefully will give me some more insight. I will try the 290's just to be sure, but I think it will only get worse! Also have another set of plugs coming too. And yes, the carb slides are in correct and the bowls are on the correct carbs. If anyone else can think of anything please let me know. This bike was brought to me and I don't know what was done to it before I got it. Thanks again Quote Link to comment Share on other sites More sharing options...
sredish Posted September 18, 2007 Report Share Posted September 18, 2007 very stupid question but you eliminated the tors on the carb right? did you unplug ALL the white plugs to cancel out the electrical aspect of it? also, you have your crossover tube installed, right? Quote Link to comment Share on other sites More sharing options...
number52 Posted September 18, 2007 Author Report Share Posted September 18, 2007 very stupid question but you eliminated the tors on the carb right? did you unplug ALL the white plugs to cancel out the electrical aspect of it? also, you have your crossover tube installed, right? All TORS is unplug. 2 wires from carburetor, TORS box, Parking brake switch, and thumb throttle switch. Don't know what crossover tube you're talking about exactly, but if it's the aluminum one that connects both intake boots together, then yes it's on there. Quote Link to comment Share on other sites More sharing options...
dajogejr Posted September 18, 2007 Report Share Posted September 18, 2007 All TORS is unplug. 2 wires from carburetor, TORS box, Parking brake switch, and thumb throttle switch. Don't know what crossover tube you're talking about exactly, but if it's the aluminum one that connects both intake boots together, then yes it's on there. No...there is a rubber hose that connects one carb to the other. It bridges the choke circuit...if you look at the left carb with the choke knob, draw an imaginary line from that point through to the other carb. There should be a small rubber hose connecting the two stock carbs....the right carb does not have a choke knob, so the two share fuel for the "enrichment" or choke circuit.... Gotta have that hose in place. Quote Link to comment Share on other sites More sharing options...
number52 Posted September 18, 2007 Author Report Share Posted September 18, 2007 No...there is a rubber hose that connects one carb to the other.It bridges the choke circuit...if you look at the left carb with the choke knob, draw an imaginary line from that point through to the other carb. There should be a small rubber hose connecting the two stock carbs....the right carb does not have a choke knob, so the two share fuel for the "enrichment" or choke circuit.... Gotta have that hose in place. This could be the problem, there is no hose that attaches both carburetors together. I hope this is the fix. Thanks again Quote Link to comment Share on other sites More sharing options...
dajogejr Posted September 18, 2007 Report Share Posted September 18, 2007 Yeah, that'll do it. Then put the bigger jets in so you don't lean it out and melt down. I can tell you for sure 220s are too small for your mods... Quote Link to comment Share on other sites More sharing options...
sredish Posted September 18, 2007 Report Share Posted September 18, 2007 Yeah, that'll do it.Then put the bigger jets in so you don't lean it out and melt down. I can tell you for sure 220s are too small for your mods... yes, that'll do it. and again yes, 220s are too lean, hell, 250s are too lean. let us know if that fixes it or not. Quote Link to comment Share on other sites More sharing options...
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