Banshee Price910 Posted June 16, 2013 Report Posted June 16, 2013 Okay here's my problem, my left cylinder has spark but its like its not hitting. Right cylinder is fine. My mods are just full fmf pipes, open airbox with k&n air filter. Plus 4 timing. Im at 300 ft above sea level carbs been cleaned and are in sync, carb tube in place. Please help Quote
FullThrottle_06' Posted June 16, 2013 Report Posted June 16, 2013 Have you tried new plugs? Try pulling and inspecting your reeds and also run a compression check. You can also swap the plugs wires around and see if the problem occurs on the other cyl. IF it does try replacing your plug caps or plug wire. Hopefully this will give you a little direction to head in. Check back in and let us know Quote
Larry's Shee Posted June 16, 2013 Report Posted June 16, 2013 Because both plugs fire at same time it's hard to tell if you're getting good spark on that cyl at the right time. To fix my son's one sided miss was clean all rust off stator poles, inside of flywheel, and off timing nubs on outside of flywheel. Set pick-up gap at both nubs. Quote
Jereme6655 Posted June 17, 2013 Report Posted June 17, 2013 Are the carb slides in the correct carb? If you look into the carb throat from the rear of the bike you should see a half moon style cut out on the slides. If its straight across.......they are in the wrong way. Does the left cylinder pick up and begin firing when you throttle up some or is the cylinder dead completely? I've had my right cylinder "die" at idle and pick up at 1/4 throttle.....only thing wrong was the idle on that carb wasn't turned up high enough after I cleaned my carbs........grabbed the sync tool and solved my issue. Quote
Banshee Price910 Posted June 18, 2013 Author Report Posted June 18, 2013 New plugs, switched the plug wires and cylinder is still not hitting. I havent had a chance to check the compression. I just changed stator plates due to the fact the old one cracked. Could that be my problem? Carbs are in correct. Reeds check out fine too. Quote
FullThrottle_06' Posted June 18, 2013 Report Posted June 18, 2013 New plugs, switched the plug wires and cylinder is still not hitting. I havent had a chance to check the compression. I just changed stator plates due to the fact the old one cracked. Could that be my problem? Carbs are in correct. Reeds check out fine too. Grab an Ohm meter and ohm out your stator and make sure it has the correct resistance. I don't know the reading off the top of my head but it can be found in the Clymer's manual. Also if you changed your timing plate I would have suggested what Larry's Shee mentioned in his post about cleaning the electrical componants such as the stator poles and inside the flywheel while you had it apart. Wouldn't hurt to check your pickup gap either. You say the cly isn't hitting so are you saying it only does it at certain RPM or it just flat out doesnt have spark? I had a problem with my bike once that is similar to yours and it ended up being an issue with the left cyl. carburator. I bought new/used carbs from a trusted site member and threw those on there and my problem was gone. It didn't have a damn thing to do with ignition, it was a carb issue. Quote
Banshee Price910 Posted June 20, 2013 Author Report Posted June 20, 2013 Grab an Ohm meter and ohm out your stator and make sure it has the correct resistance. I don't know the reading off the top of my head but it can be found in the Clymer's manual. Also if you changed your timing plate I would have suggested what Larry's Shee mentioned in his post about cleaning the electrical componants such as the stator poles and inside the flywheel while you had it apart. Wouldn't hurt to check your pickup gap either. You say the cly isn't hitting so are you saying it only does it at certain RPM or it just flat out doesnt have spark? I had a problem with my bike once that is similar to yours and it ended up being an issue with the left cyl. carburator. I bought new/used carbs from a trusted site member and threw those on there and my problem was gone. It didn't have a damn thing to do with ignition, it was a carb issue. It has spark and is getting gas but its like the cylinder is completely dead at all rpm's. You can hear that is not working properly as soon as you start it up. Compression is 115 on both cylinders. Quote
Young Guns Racing Posted June 21, 2013 Report Posted June 21, 2013 Have you double checked your reed valves yet? They will be a defenite to look at if you havnt already. I also second the carb issue, I dealt with this once, reeds were shot, I replaced them all. Still had a little miss to it, I rebuilt my original carbs, still no help. Bought a nice used set, cleaned em up, threw the rebuild kits in them, no more problems. Hope you get it solved. Quote
Banshee Price910 Posted June 23, 2013 Author Report Posted June 23, 2013 Got it solve it was the pick up gap. She screams and pulls hard again thanks for the help Quote
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