TWILES Posted March 23, 2012 Report Share Posted March 23, 2012 I bought an 01 thats stock with Pro Circuit pipes, K&N filter, and 40 pilot jets. When you get on up close to half throttle it hooks up and screams on both cylinders and when sitting, if I'll push the throttle far enough that it fires and keep revving it out that far, it continues to fire. At idle, its dead but it idles. I pulled the plug and its sparking really good which is weird. My conclusion is that the pilots jets are too big and that cylinder is not in the best shape and its flooding that cylinder out. Once the slide is opened and its getting enough air, it fires the gas like its should. I've ordered 27.5 pilots but they won't be here till next week and this is bugging me. Anyone have any other ideas. The wiring was stripped down to bare minimum and looks like shit but if it was a sensor issue I didn't think it would get above idle on either cylinder. Travis Quote Link to comment Share on other sites More sharing options...
CFH87 Posted March 24, 2012 Report Share Posted March 24, 2012 I'd say cdi, stator, or coil. Quote Link to comment Share on other sites More sharing options...
sheerider11 Posted March 24, 2012 Report Share Posted March 24, 2012 Check the reeds Quote Link to comment Share on other sites More sharing options...
slothman Posted March 24, 2012 Report Share Posted March 24, 2012 if it's running rich from the pilots the plugs will be pretty black/oily. Quote Link to comment Share on other sites More sharing options...
Larry's Shee Posted March 24, 2012 Report Share Posted March 24, 2012 Clean carbs comepletely, don't just give them a quick douche and call them clean. Have to take everything apart. Set float level. Syncronize carbs. Adjust air screw. Clean carbs one at a time as parts are different. Don't forget to replace choke crossover tube. Also check pick-up gap at both nubs. Quote Link to comment Share on other sites More sharing options...
bansheesandrider Posted March 24, 2012 Report Share Posted March 24, 2012 I have never seen a Banshee with stock carbs and near stock displacement that needed a pilot jet bigger than 30. Since it won't fire until it comes on the main jet, I think the pilot is too big. The other thing to look at is the plug wire and boot on the left side. If there were problems with the stator, CDI or coil, it should affect both cylinders, not just one. I suppose if the pickup coil gap was drastically different between the 2 nubs on the flywheel, it could affect 1 cylinder and not the other, so you may want to check the pickup coil gap on both nubs of the flywheel. Quote Link to comment Share on other sites More sharing options...
wfobasheeboy Posted March 24, 2012 Report Share Posted March 24, 2012 Did you try switching the pug wire over & see if the miss move the ether CYL ? Quote Link to comment Share on other sites More sharing options...
TWILES Posted March 26, 2012 Author Report Share Posted March 26, 2012 Clean carbs comepletely, don't just give them a quick douche and call them clean. Have to take everything apart. Set float level. Syncronize carbs. Adjust air screw. Clean carbs one at a time as parts are different. Don't forget to replace choke crossover tube. Also check pick-up gap at both nubs. The carbs are spotless and synced and everything is there, inside and out. Again, it idles great but only on the right cylinder. The plug on the left fires when I kick it but something is keeping it from igniting the fuel when its running up till the slide is opened close to half. I really didn't catch it until I grabbed the left pipe and it was cold. Run it up to half and rev it past half a few times without letting it drop back to idle and the pipe gets just as hot as the right. Let it drop back to idle and the pipe cools off. The pick up gap hasn't been checked. I'll check those when I get the 27.5 pilots in this week along with the reeds. What is the clearance supposed to be? Travis Wiles Quote Link to comment Share on other sites More sharing options...
cline Posted March 26, 2012 Report Share Posted March 26, 2012 I have read many of times on here that the pick up coil gap should be .02 Quote Link to comment Share on other sites More sharing options...
ticktock Posted March 26, 2012 Report Share Posted March 26, 2012 Carbs and idle are not Sync'd correctly. Did you Sync with a vacuum tool or eye? Use a tool after you get the correct pilots and you will be fine I think Quote Link to comment Share on other sites More sharing options...
TWILES Posted March 27, 2012 Author Report Share Posted March 27, 2012 Carbs and idle are not Sync'd correctly. Did you Sync with a vacuum tool or eye? Use a tool after you get the correct pilots and you will be fine I think I had a minute today to mess with it and I swapped the plug wires and it started running on both cylinders. How much Syncing can you do to these carbs? The slides open exactly the same, the jets are the same, the needles are the same and the idles are turned out the same. I'll dig deeper Friday. I'll have the jets tomorrow. Quote Link to comment Share on other sites More sharing options...
cline Posted March 27, 2012 Report Share Posted March 27, 2012 (edited) I had a minute today to mess with it and I swapped the plug wires and it started running on both cylinders. How much Syncing can you do to these carbs? The slides open exactly the same, the jets are the same, the needles are the same and the idles are turned out the same. I'll dig deeper Friday. I'll have the jets tomorrow. These guys suggested that sync tool becase, your eye might say the slides look good but the vacuum measured by the tool could show show differnt readings through each carb. The sync tool is where its at to be sure and answer your question, "How much Syncing can you do to these carbs?" Edited March 27, 2012 by cline Quote Link to comment Share on other sites More sharing options...
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