polkaudio Posted August 28, 2006 Report Share Posted August 28, 2006 Hello everyone, I'm new to this board. I have an 89 Banshee and over this past new years weekend to the desert it was running real rough. I finally have some time to try and figure it out. It's basically mis-firing first on one side then the other. This is happening at all RPM's. When at idle, it sounds okay, but when I bring up the R's it starts to pop real loud on one side. I've talked to a couple of people about it. One person suggested the coil so I changed it and it's still doing the same thing. Another friend thought of checking the reeds. I'd like to get some more advise before I start spending a lot of money chasing this down. Thanks. Quote Link to comment Share on other sites More sharing options...
dajogejr Posted August 28, 2006 Report Share Posted August 28, 2006 Welcome aboard.... Need some more info. What mods do you have done to the bike? It's probably going to be carb related, or "other" electrical. Carb cleaning costs you nothing, maybe a bottle of carb cleaner...and time. You can do some basic electrical troubleshooting....remove the plastics and check all wires for burns, cut...frayed, etc. Something is probably grounding out. or...if you have the factory TORS...I'd bet they're playing a part in this. Quote Link to comment Share on other sites More sharing options...
polkaudio Posted August 29, 2006 Author Report Share Posted August 29, 2006 Welcome aboard.... Need some more info. What mods do you have done to the bike? It's probably going to be carb related, or "other" electrical. Carb cleaning costs you nothing, maybe a bottle of carb cleaner...and time. You can do some basic electrical troubleshooting....remove the plastics and check all wires for burns, cut...frayed, etc. Something is probably grounding out. or...if you have the factory TORS...I'd bet they're playing a part in this. It had a twist throttle when I bought it about 10 years ago. It has off-brand aftermarketr pipes and silencers. I believe the seller said they are Kaufman (not sure of spelling), I've tried finding them on-line with zero luck. Also the head was milled a few thousands. A few years ago I had a guy check out the engine sine it had never been apart for a rebuild that I knew of. All he did was port the transfer ports and a full tune/maintenance for me. This Shee has run flawless ever since I bought it, so I'm not too bent that now it's acting up. I took all the plastics off and checked the wiring harness and everything was fine. I double checked all connections to make sure they were fully seated. A friend suggested switching the coil wires to see what happens. I did this and it ran the same as with the original coil. Another friend was also thinking maybe dirt inthe carbs. I'm pretty anal about keeping a clean air filter on, but anything is possible when dealing with sand. Is this enough info for you or is there something I'm missing? Quote Link to comment Share on other sites More sharing options...
dajogejr Posted August 29, 2006 Report Share Posted August 29, 2006 Does it still have the factory carbs and TORS on it? It's the big oblong boxes on top of each carb with a knob to turn for idle adjustment, and wires coming out of it. Could be dirt in the tank, dirt in the carbs...but...the TORS are notorious for malfunctioning and causing spark issues.... Chase has a pretty good write up on how to do it...here: http://www.bansheehq.com/forums/index.php?...mp;#entry557013 (Hammer optional... ) Quote Link to comment Share on other sites More sharing options...
cRaZyShee8 Posted August 29, 2006 Report Share Posted August 29, 2006 Can you get it to act up while in neutral just revving it up? If so, take your air box off, and when you rev it up look to see if it is popping back through the carb(s). If so, I would take them off and clean them out real well, and also take the reeds out while the carbs are off. A broken or cracked reed will make the engine pop through the carbs. This is a good starting point, and easier than troubleshooting electrical. Try that first. Also, when I am at work, the first thing I do with an engine that is acting up is a compression test. I hate to go through troubleshooting when I am working with an engine that has bad/low compression. Quote Link to comment Share on other sites More sharing options...
polkaudio Posted August 29, 2006 Author Report Share Posted August 29, 2006 The TORS are off. It sounds normal when at idle and only pops when I increase the R's or rev it. Although if I recall the air from both exhaust pipes didn't seem equal at idle. I've talked to a couple of other buddy's who seem to agree with this group that it's probably the reeds. Thanks for the help. Quote Link to comment Share on other sites More sharing options...
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