banshee boy 98 Posted March 17, 2004 Report Share Posted March 17, 2004 any ideas what will cause a banshee to pop out of the exhaust at about any rpm? carbs are jetted corretly. it also wont start unless you spray some carb cleaner into the carbs then it will fire right up. wont idle at all? could it be a float problem and it is not getting enough fuel? it seams that if you are reving the engine and it starts poping if you spray carb cleaner in to it, the poping isnt as bad...if that makes any cents? will bad reeds do this? it seams to be worse on the right cyl so i switched to plug wires and that did not change anything??? Quote Link to comment Share on other sites More sharing options...
DBLtapS Posted March 17, 2004 Report Share Posted March 17, 2004 sounds like a jetting problem. How is your compression? What are you running? ie. pipes, airkit?... Quote Link to comment Share on other sites More sharing options...
TREELIZARD Posted March 17, 2004 Report Share Posted March 17, 2004 sounds like your running lean on the jetting, if it was me i would go up 3 or 4 sizes on your mains and see if that helps out at all Quote Link to comment Share on other sites More sharing options...
banshee boy 98 Posted March 17, 2004 Author Report Share Posted March 17, 2004 comp. is 170 t-5 pipes stock carbs, jetting is piolet is 26 main is 260, k&n filter in the box. i'am leaning toward pluged piolet jets? what do you think. i might be a little lean on the main but not bad enought to be poping like this?? Quote Link to comment Share on other sites More sharing options...
Dave876 Posted March 17, 2004 Report Share Posted March 17, 2004 I have had this exact prblem in my left cylinder,check your connection on the coil,its a VERY good chance that is it....hope this helps Bro... Quote Link to comment Share on other sites More sharing options...
Brian G Posted March 17, 2004 Report Share Posted March 17, 2004 check the spark plug boots? make sure they are tight abd have a good connection with the wires coing out of the coil. And it does not matter witch wire goes on any cylinder, its a dual spark ignition it fires at the same time. Quote Link to comment Share on other sites More sharing options...
Schizo Posted March 17, 2004 Report Share Posted March 17, 2004 comp. is 170 t-5 pipes stock carbs, jetting is piolet is 26 main is 260, k&n filter in the box. i'am leaning toward pluged piolet jets? what do you think. i might be a little lean on the main but not bad enought to be poping like this?? If your compression is 170 then you better be running higher octane or the popping your hearing might be the detonation demons in there beating on your cylinders with a hammer Quote Link to comment Share on other sites More sharing options...
sredish Posted March 17, 2004 Report Share Posted March 17, 2004 If your compression is 170 then you better be running higher octane or the popping your hearing might be the detonation demons in there beating on your cylinders with a hammer That is true. Make sure your running race fuel, 110 octane or better. Reeds also could do that, you might consider checking before you start screwing with the jetting, but assuming the reeds are good, I'll add my good ol' 2 cents. As long as your using the 110+ gas, go up on the mains 4 or 5 sizes and see what shee does. Check your plugs. When you get the plugs burning good, adjust the pilots. Also, your needle should be 3rd clip from the top, and if you have pipes, the 4th clip. That will help starting, and you might need to go up on the pilot a little. A list of mods, elevation and air setup would be much better to help you out with jetting. Quote Link to comment Share on other sites More sharing options...
banshee boy 98 Posted March 17, 2004 Author Report Share Posted March 17, 2004 the part of not starting unless you spray carb cleaner into is what is making me lean toward pluged piolets. it has 110 fuel.mixed at 32:1. the gas is ok(same gas that is used in both of our other banshees with no problem) the plug caps are new and tight, tryed new plugs also. it acts like it is runing out of fuel, and that pops out of the silencers. i'am going to go through the carbs tonight. i hope to find pluged piolets. Quote Link to comment Share on other sites More sharing options...
Ducman Posted March 17, 2004 Report Share Posted March 17, 2004 comp. is 170 t-5 pipes stock carbs, jetting is piolet is 26 main is 260, k&n filter in the box. i'am leaning toward pluged piolet jets? what do you think. i might be a little lean on the main but not bad enought to be poping like this?? T-5's, K&N, 260 mains - your pretty friggin lean on top. You should be more like 300 on the mains with the air box lid on with the K&N, doesn't explain why it is poping at all rpms though, but if you run really lean you will heat things up and cause funny things to happen on all other jeting circuts as well. You are probably not jetted correctly on the pilots either. Try screwing your air screws in and see if it will idle then, if you get the screw within 1/2 turn from seated the go up a pilot size. If it does you are way lean on the pilots and need the next size up. Cleaning the cabs out is n't a bad idea either just to rule that out you can do that when you put the bigger mains in. Quote Link to comment Share on other sites More sharing options...
banshee boy 98 Posted March 17, 2004 Author Report Share Posted March 17, 2004 but why wont it start with out spraing carb cleaner in the carbs? Quote Link to comment Share on other sites More sharing options...
Ducman Posted March 17, 2004 Report Share Posted March 17, 2004 but why wont it start with out spraing carb cleaner in the carbs? probably too lean, if it wont idle good then it definitly wont start good. Try turning your air screw to like 1/4 of a turn out from seated and see if it improved the idle or starting at all. If it does, go up a size on the pilots and adust the air screws untill you get a good healthy idle. Quote Link to comment Share on other sites More sharing options...
sredish Posted March 17, 2004 Report Share Posted March 17, 2004 Sorry, I didn't see your list up there. I do that sh*t all the time. Your main jet is pretty lean, unless your elevation is way up there. I would also say 300 or 310. I ran 310 w/ my fatties and the airbox lid on, and a Uni filter, no K&N. As far as pilot, I'd try a 27.5 pilot and the 4th clip. Some banshees need more fuel than others, mines one of them, it likes 'em rich. Try that and put your air screw a turn out or so and see if you get anywhere. The starting is all in the pilot, air screw and part of the needle. The needle will help starting, but the pilot is also good there. The air screw is good for fine tuning once you get er going. Quote Link to comment Share on other sites More sharing options...
banshee boy 98 Posted March 17, 2004 Author Report Share Posted March 17, 2004 what if my carb bowls are switched? Quote Link to comment Share on other sites More sharing options...
sredish Posted March 17, 2004 Report Share Posted March 17, 2004 switch 'em back and see. Quote Link to comment Share on other sites More sharing options...
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