Help, bike runs on 1 cylinder!

[01350banshee]

Hello fella's,

I'm new here and I have a problem that hopefully someone can lead me in the right direction to fix. :shrug: I have a 01 shee with stock carbs (w/TORS) and bore, ported and polished cylinders and polished heads done by Mike Velasco about 3 yrs ago. Toomey T-5 pipes/2-1 air pod/jet kit/spark arresters and CF boysen reeds. I run 32:1 redline in 92/93 octane name brand fuel. I recently discovered after bringing the bike out of lay up from over the winter that the engine is now running on only one cylinder (the right). The left seems to partially run and I observed it putting out very little exhaust pressure so, I assumed that the left carb might be clogged up as I also noticed that fuel was seeping from the left FB vent line, but after tearing down the carb to parade rest and back, I still have the same problem of it running on one cylinder but the fuel no longer seeps out from the FB vent line. I pulled the plugs and checked the color (right good/left wet) and spark as I had an issue with the TORS system once before. I tested the spark and noticed that it seems to be putting very low spark (both). From what I can tell it looks more like static when you rub your hand over a the door knob in the winter vice a nice blue flash. I replaced the plugs then swapped the coil leads to see if the coil was an issue and the problem remained on the left side. I took the TORS cover plate off and tapped the switch as I had done before (right side). The problem still remains. I'm going to borrow a multi-meter to day to start checking the electrical system. Is it possible to disconnect the TORS w/o getting the elimniator kit?

[Walleye]

yes u can disconnect the tors wires from the carbs and then disconnect the tors wire from the tors control unit under on the frame just on the left side. its a little box thing on the left of where the coil is.

[01350banshee]

Thanks,

I will give that a try. I have also read for the last two hrs here on the same issue many of you have had. Unfortunately, some never got back with what was exactly wrong with their bikes. I got soo frustrared after spending the last two weekends trying to figure out the problem that I almost:

1. decided to set it on fire and say the hell with it.

2. Take it to the steeler and let them ass rape me. NOT!!!!

3. sell it as is and go 4 stroke.

4. :baseball_bat:

As it stands I'm trying to keep my cool with this thing. I've owned two strokes (tz 250's, yz.'s, ysr's and kx's) all my life and this thing by far has to be the biggest pain in the ass. I need to get this thing fixed before the 7th of July or I'm gonna be S.O.L when our group makes the trip to the Oregon dunes.

Edited June 13, 2006 by 01350banshee

[fastcar01]

MIne had pretty much the same problem. I simply unplugged the TORS connjector under teh gas tank and she ran fine. Definatelky try that, it is one plug easy to get to.

[Handyman]

As I read this it was like deja vu all over again. From the way it sounds, sounds like you are having the exact same problem I had with mine. The probelm with mine(according to the stealership) was that the needle imulsion tube in the slide was to blame. They replaced my needle from a new jet kit and that seemed to fix the problem. What they did while they had it for 2 weeks was tore off the jugs and checked to see if my pistons were damaged and just took a good look in the jugs, swapped out every imaginable component possible from a new '06, etc. Well I doubt that what they say was wrong was actually was the problem. I think what happened was that when they put everything together they fixed what ever the problem was and just didn't realize it. Mine was also firing at the bottom and top end of the RPM range and once you got like over 5mph it was like someone was flipping a switch and turning off the left cyclinder until you were in like 5th gear but I was getting spark the entire time. If I can give any advice it would be to take out the needles and swap them to see if that could be the problem, look at the slides and make sure they are in correctly( I know it's an obvious thing)...just look at all the little stuff. if you have any questions feel free to PM me or just ask them here. Here is the link to my problem....

http://www.bansheehq.com/forums/index.php?...topic=59587&hl=

[01350banshee]

:shrug: Sorry, but this is going to be pretty long as I will try to give all the details I can so maybe someone will know whats going on with my bike.

Well, I took the information provided from you guy's and undid all the TORS connections and the problem remained :sad:. Now I'm stumped..... The left cylinder continued to barely run at idle even with the TORS system removed. I pulled the plugs, the left was very oily, the right was in ok condition. I checked the pipe packing and decided to change it out in both pipes as they were both very oily. I swapped out to another plug set and swapped the coil /plug wires again tried to light it off and the problem moved to the right cylinder, but I did notice that the right FB vent was also draining fuel :baseball_w00t:. I shut off the fuel and tapped on the FB, opened the fuel line and the fuel stopped leaking out. I have also noticed the bike has also started spitting out fuel/oil from both pipes. I took a break and while doing so, decided to drain the fuel as I had changed from my normal brand of premix (Redline) to Dumonde Tech Synthetic because thats all the local cycle shop had at the time. I initially mixed 3 gallons @ 32:1 with my ratio rite when I added fuel two weeks ago but this time I followed the instructions on the bottle for 4oz per gallon @ 32:1. I mixed up 1 gallon as not to waste to much if the fuel/oil is the cause of it spitting fuel out the pipe. I got in the truck and went down to advanced auto parts and picked up a set of denso plugs (did not have ngk's) as I have gone thru 6 sets since starting this evolution. Checked the gap, then put the new plugs in left the coil/plug wires swapped, connected the entire TORS system back up and tried to light it off again. This time it started up on both cylinders, ran at idle w/and w/o choke, but spit out fuel/oil from the right pipe something bad when blipping the throttle. I decided to go for broke. I let it warm up a bit more, put it in gear and commenced to ride down the street. Initially it wanted to shut down but I quickly blipped the throttle and off she went like a raped ape in 1st gear. As I looked back I could see where the right pipe had spit out fuel/oil onto the ground after I shot off. I rode down to the end of the street turned around opened the throttle and she stood up on the back wheels twice like never before. I commenced to try this two more times before shutting it down in my drive way. I'm confuse now, what will cause it to spit fuel/oil out of the pipes? Incorrect ratio mix, I could be wrong. Can any body come up with a cause of my problems?

[RNBRAD]

Your spitting oil mix now because your crank case was loaded from the lack of combustion before. It will build up them spit it out at higher rpm's. If it's running ok now it should clear up after some riding time. Not sure how long, really depends on how much was built up.

[Handyman]

If I was you I would take that thing out and ride it for a while if it's running ok now. Blow all that crap out of the cylinders and exaust pipes. If it runs fine the entire time th ecrap should clear up ike RNBRAD said.

[01350banshee]

I wont bite and say it is fixed because, I still feel something is wrong! I bet tomorrow when I light it off, I will be in the same position as before. Still does not answer why when I disconnected the TORS system I still had the initial problem of running on one cylinder. Yet, I hook it back up and it seems to have made no change. As I mentioned before I had swapped the plug wires and the problem stayed on the same side. Today I swap it and the problem moves. WTF!!!! I also changed plug brands this afternoon, set the gaps to 28, remixed 1 gallon of gas at 4oz (32:1). Unfortunately, I cant rip up and down my street to try and clear the crank case out for to long as someone may call the cops. I may try to drive out to my local riding area tomorrow to try and blow more of the fuel out of the crank case. I also noticed that it would start on the 1st or 2nd try and put out very little smoke while warming up. Makes me feel like all hell is about to break loose. Because even when it was new it never did that. Tomorrow I will clean the right carb as it had no issues before except for today when it started leaking fuel from the float bowl vent line. For a brief moment the left side did it also but it cleared right up. Tomorrow, I'll possibly recheck that idle settings are good and FB height is 21mm. I reset the air screw as per Toomey specs 1.5 turns from the end, cleaned the filter last weekend, slides are facing the correct direction, verified sync is good. What am I missing???

[Handyman]

The TORS system would not affect the one cyclinder if the TORS was working like it should(electrical). Since the problem was there before and after you disconnected the TORS you can rule out the TORS. As far as the problem swapping sides when you swapped the plug wires....swap them again to see if the problem swaps sides again, if it does you may want to look at the plug wire. I may have some corrosion on the plug wires keeping it from making a good connection. Y ou may even want to look at that black box the plug wires are connected to(not sure what it's called) as a contributing factor. Cleaning out the right carb is a good idea. You might want to think of cleaning out both at the same to triple check that you aren't doing one thing different to one carb than the other. YOu may have dirt in your tank and might want to take some clean gas and rinse out your tank. Take the petcock off to make sure the filters on it are not torn letting dirt in the carbs(found mine had a hole in the petcock filters). Hope some of this helps info helps... I know that some of the stuff is being repeated but sometimes looking at someting again may reveal something you overlooked the first time.

[xieatcatbrainsx]

hrm. I have a problem with mine somewhat like that too. banshee wants to be abused. i noticed that when i take my girlfriend out and have to drive slow (but fun ;-) ), eventually a plug kills itself because it is bored. then i have to buy new plugs and it runs good if you beat on it. the 350twin doesnt ground the cylinders individually, the spark goes in through one and comes out the other side. sometimes if im not treating the 'shee right, and one cylinder quits, but i switch the wires to put the strong side of the sprk on the dead cylinder and the plug cleans itself. just keep it wide open lol. haha this prolly didnt help any but thats what i figured out.