bansheeOX Posted March 6, 2006 Report Posted March 6, 2006 i have no spark on my left cylinder and i have replaced plugs, coil, wires, plug caps, and was told it could be a TORS switch problem, so i unplugged the TORS to disable it and it still is not firing on the left. any ideas on what the prob could be? Quote
vdubn Posted March 12, 2006 Report Posted March 12, 2006 I have the same problem, switched the plug wires from left to right, and the same thing.... wondering if it could be the CDI? Any ideas? Quote
Handyman Posted March 12, 2006 Report Posted March 12, 2006 Have you done any mods to the engine or any engine components at all? Did this happen all of a sudden? Has any maintenance been done on the bike, Mechanically/electrically? Things we need to know to help you out as best we can. Quote
vdubn Posted March 12, 2006 Report Posted March 12, 2006 Top end was just redone, but the problem existed before, sporadically. We looked over the wiring while we had the top end apart, and noticed that at least one of the TORS wiring, was cut but not joined together. Both should be twisted together, correct? We have no TORS, and no break switch (that should just be disconnected and open, correct?). We started it tonight for the first time since the rebuild, and it was firing on both sides for about 20 seconds, and from then on couldn't get any firing on the left side. It idled fine, but eventually gas started dripping out of the head on the left side (I guess it was getting plenty of fuel, and obviously not burning it). Switched the plug cables, tried new plugs, etc., and no matter what, the left side would never fire (pipe never even warmed up). Thanks for any help, you can provide.... Quote
daryn c Posted March 12, 2006 Report Posted March 12, 2006 you checked for spark? or is the cylnder not fireing? Quote
akita8 Posted March 12, 2006 Report Posted March 12, 2006 Are you sure you have the left carb slide in correctly. Quote
Handyman Posted March 12, 2006 Report Posted March 12, 2006 If you unplug the TORS connectors at the carbs then you have to unplug the connector from the throttle end. If that has already been done then check to see if the carbs slide is in correctly. If you look at the slide there will be a cut out on one side that cut out should face towards the rear of the bike. if you know some one with a banshee try using parts from their bike to see if it's something on your that is the problem. Have you tried to ride the bike and see id the left side will fire at all while riding?? I know that may seem stupid but it may tell you more about what the problem could be. Quote
vdubn Posted March 12, 2006 Report Posted March 12, 2006 Fuel is getting to the left cylinder fine, I will double check that the slides are in correctly, I know that they can be switched accidentally, but can only be installed one way, even if switched. As for tors, the switch at the throttle is gone, as are the plugs, but only 1 or 2 of the wires from the connectors were fused together, I wondered if that could be the problem? I am going to look at the wiring first, then will try to swap out the CDI. I already swapped the coil, and replaced the stator, so I know those aren't the issue. What about the small box next to the CDI, is that the rectifier? Can it cause any issues with spark? The bike fires on the first kick, and idles fine, but you can't see any smoke from the left, pipe never gets warm, and when you accelerate, there is no power (running on one cylinder). I appreciate any ideas... Quote
wade30 Posted March 13, 2006 Report Posted March 13, 2006 Is there spark or not on left side? If there is, I had same problem. Just redid my carbs, and the carb kits came with two pilot jets. I put the wrong one in, it was dumping too much fuel in at idle and killing the spark. I put the correct pilot in and everything was fine. just a thought Quote
Handyman Posted March 13, 2006 Report Posted March 13, 2006 I would do a spark test to see if the plug is sparking. Also look at the gap on the plug Quote
vdubn Posted March 13, 2006 Report Posted March 13, 2006 Yea, good idea, I'll pull the plug and see if I can see any spark, that is a good place to start. I just figured none since there isn't combustion. I'll also check the pilot jet, that is a good idea. I'm pretty sure that they are both 25's. Quote
Kwietshee Posted March 13, 2006 Report Posted March 13, 2006 I actully had the same problem too, I checked every thing you did but still no fix ,then I took intake apart and found ripped reed gasket- I made my own out of gasket paper and been running fine since. just a suggestion. Quote
vdubn Posted March 16, 2006 Report Posted March 16, 2006 Ok, well I finally figured out the problem (or problems). First of all, the stator gap was too wide. Initially I couldn't get it closer than .020" after I installed the adjustable timing plate, but last night I checked the spark on the left side, and it was weaker than the right. Spark was there, but not nearly as big and blue as the right side. The second issue that caused the majority of the problem, was that the pilot jet was just laying in the carb, only held in by the plastic diffuser piece (apparently I put it in, but totally forgot to screw it down). So, a couple of you guys were right on, too much fuel basically just drowned the spark on that cylinder. Thanks for the help, and hopefully this will help others with similar issues. Quote
Handyman Posted March 17, 2006 Report Posted March 17, 2006 Glad to see that you found the problem(s). I would try and run the bike a little and see if running will burn the oil off the plug and make the spark better(if you want to save money) or just go out and buy a new set and see if the sparks are the same. Quote
vdubn Posted March 17, 2006 Report Posted March 17, 2006 Well, after adjusting the gap, the spark is the same on both cylinders... not sure why, but that along with the pilot jet cleared it all up. I appreciate everyone's help. Quote
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