shelrad1 Posted September 12, 2009 Report Share Posted September 12, 2009 Not sure if this is in the right catagory or not but here goes. When I start her up exhaust is coming from both pipes. After about 30 sec. the left side quits hitting, just spitting out cold air. Acts like a fouled plug or something. Switch plugs, same thing, left cylinder not hitting again. Can anyone give me some ideas ? Quote Link to comment Share on other sites More sharing options...
2/2 many banshees Posted September 12, 2009 Report Share Posted September 12, 2009 Not sure if this is in the right catagory or not but here goes. When I start her up exhaust is coming from both pipes. After about 30 sec. the left side quits hitting, just spitting out cold air. Acts like a fouled plug or something. Switch plugs, same thing, left cylinder not hitting again. Can anyone give me some ideas ? Running out of gas some how on the left side. Quote Link to comment Share on other sites More sharing options...
98_shee Posted September 13, 2009 Report Share Posted September 13, 2009 Try switching the plug wires and see if the problem follow's to the rite side, check your stator and coil if it does. If its not electical make sure your carbs are in sync and you don't have any clogged jets or cracked intake boots. Do you still have the tores hooked up? Quote Link to comment Share on other sites More sharing options...
shelrad1 Posted September 13, 2009 Author Report Share Posted September 13, 2009 Try switching the plug wires and see if the problem follow's to the rite side, check your stator and coil if it does. If its not electical make sure your carbs are in sync and you don't have any clogged jets or cracked intake boots. Do you still have the tores hooked up? TORS is removed. Switched the plug wires, and it still is not firing on the left side. Did notice that the left carb top doesnt tighten up to a stop like the right does. Its not cross threaded,(must have been sometime in the past) but instead of snugging up tight it will keep on spinning. Think this could possibly be leaking air ? Quote Link to comment Share on other sites More sharing options...
98_shee Posted September 13, 2009 Report Share Posted September 13, 2009 That could cause it to leak, does it backfire when you rev it and let off? Are the carbs in sync? Quote Link to comment Share on other sites More sharing options...
shelrad1 Posted September 15, 2009 Author Report Share Posted September 15, 2009 Carbs were a little out of sync, fixed that. Checked main jet, its ok, forgot to check the pilot jet. Boots dont appear to be damaged. Still running the same. It doesnt backfire. Just dies when I let off the gas. Quote Link to comment Share on other sites More sharing options...
pr0blumz Posted September 15, 2009 Report Share Posted September 15, 2009 Carbs were a little out of sync, fixed that. Checked main jet, its ok, forgot to check the pilot jet. Boots dont appear to be damaged. Still running the same. It doesnt backfire. Just dies when I let off the gas. Sounds like a plugged pilot jet Quote Link to comment Share on other sites More sharing options...
shelrad1 Posted September 17, 2009 Author Report Share Posted September 17, 2009 Last night I removed the pilot jet, it looked good but I cleaned it anyway and re-assembled. Started it up and now the right side is missing out and left side is firing! Tonight I will dis-assemble the right carb, clean everything out and see what happens. Quote Link to comment Share on other sites More sharing options...
shelrad1 Posted September 19, 2009 Author Report Share Posted September 19, 2009 The jets in both carbs have been taken out and cleaned and everything put back togeather. Both sides are running fine, but only for about 1/4 throttle. From that point on it boggs. I know it shound like the mains need changed, but I havnt changed anything on the motor for several years (its probably only ridden maybee 20 hrs. a year)and the jetting used to be spot on. BTW the motor has the following mods : Head milled & re-domed, play porting, trued & welded crank, timing advanced, flywheel lightened, running 340 mains and #25 pilots. Quote Link to comment Share on other sites More sharing options...
98_shee Posted September 19, 2009 Report Share Posted September 19, 2009 Your pilots are still stock you need 27.5 or 30's with your mods. Does the bike cut out when you go past 1/4 throttle or just bog? If it cuts out real bad it may be your parking brake or other electronics. Quote Link to comment Share on other sites More sharing options...
steenasbanshee Posted September 26, 2009 Report Share Posted September 26, 2009 Your pilots are still stock you need 27.5 or 30's with your mods. Does the bike cut out when you go past 1/4 throttle or just bog? If it cuts out real bad it may be your parking brake or other electronics. subscribing, not to hijack but im having the same exact issue Quote Link to comment Share on other sites More sharing options...
shelrad1 Posted September 26, 2009 Author Report Share Posted September 26, 2009 I dont think its the pilots, because its ran great in the past with this set up. Parking brake is removed. I am also having to use starter spray to get it to start. I have been wondering in the back of my head if it needs a rebuild, but dont think so because from just off idle to about 1/4 throttle it will pull your arms out of the sockets, then just boggs past 1/4 . I think I'm just going to get some newer (& bigger ?) carbs. Yesterday I started the new thread " what carbs would you suggest ". All of the motors mods are lised on that thrd. I appreciate all the help. Quote Link to comment Share on other sites More sharing options...
bbcmudtruck Posted September 26, 2009 Report Share Posted September 26, 2009 Make sure you put the slides in correctly and check to make sure you hooked the choke tube up between the carbs. Quote Link to comment Share on other sites More sharing options...
fastbanshee8 Posted September 26, 2009 Report Share Posted September 26, 2009 Try adjusting the air mixture screws on both carbs. Turn them in 1/4 of a turn each, give the motor 20-30 seconds to adjust, and see if it's any better. Just make sure that both air mixture screws are turned out the same number of turns. If the pilot jets are the right size, then you should have your air mixture screws turned out 1.5-2 turns. If they are out less than 1 turn, you need bigger pilot jets. Quote Link to comment Share on other sites More sharing options...
shelrad1 Posted September 29, 2009 Author Report Share Posted September 29, 2009 Make sure you put the slides in correctly and check to make sure you hooked the choke tube up between the carbs. Thanks for reminding me to check the choke tube. Now it starts fine, idles great, and will run perfect untill about half throttle then falls on its face. No back-firing or anything like that, it just quits making power past about half throttle. I switched the mains from 340's to 350's, no change. Is it possible the jet thats under the main jet (cant remember what its called, saw it in my Clymber shop manual)is plugged or obstructed ? Quote Link to comment Share on other sites More sharing options...
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