quadboy-55 Posted August 2, 2010 Author Report Share Posted August 2, 2010 (edited) Idk what it could be. It also had trouble idling when I first bought it. Once reved up it would go like new, but at idle it would eventually stall, left on its own for more than 30 seconds. Edited August 2, 2010 by quadboy-55 Quote Link to comment Share on other sites More sharing options...
muggzy Posted August 3, 2010 Report Share Posted August 3, 2010 (edited) OK, you probably ought to start at the beginning... Make sure you still got a spark. Dumb question but have you tried using the choke to get it started? You mentioned "dealer recommended" did you get this from a dealer? I know the manuals say 24:1 and you didn't say what type of 2-cycle oil but I'm pretty sure my son blew his motor using cheap oil at 24:1. I've been using Super M synthetic blend @ 32:1 for over a year now and haven't blown my engine yet (knock on wood). I think I can pretty safely say NO ONE on this forum is running 24:1. When I started I was doing the same thing; following the manual and I was a little apprehensive about going against the manual but... List all the mods you know of - intake to exhaust, your altitude and temp where you are riding and someone on here (I'll try) should be able to put you in the ball park with your jets. Since you just got it, I'm assuming you don't know any history (where it was operated, jet sizes, etc.) Good Luck, we'll try to help. Edited August 3, 2010 by muggzy Quote Link to comment Share on other sites More sharing options...
quadboy-55 Posted August 3, 2010 Author Report Share Posted August 3, 2010 OK, you probably ought to start at the beginning... Make sure you still got a spark. Dumb question but have you tried using the choke to get it started? You mentioned "dealer recommended" did you get this from a dealer? I know the manuals say 24:1 and you didn't say what type of 2-cycle oil but I'm pretty sure my son blew his motor using cheap oil at 24:1. I've been using Super M synthetic blend @ 32:1 for over a year now and haven't blown my engine yet (knock on wood). I think I can pretty safely say NO ONE on this forum is running 24:1. When I started I was doing the same thing; following the manual and I was a little apprehensive about going against the manual but... List all the mods you know of - intake to exhaust, your altitude and temp where you are riding and someone on here (I'll try) should be able to put you in the ball park with your jets. Since you just got it, I'm assuming you don't know any history (where it was operated, jet sizes, etc.) Good Luck, we'll try to help. All I know is the Banshee is all stock, I assume the jets are as well. I do want to double check though. The Banshee has NO engine mods. The oil is from Yamaha and its a higher end full synthetic. I'd probably switch over to another brand though. I think the carbs are due for a 'lil cleaning though since it is an '03. I'll also check for a spark as well. My altitude is 3000 feet, at about 60-70ºF Quote Link to comment Share on other sites More sharing options...
Michael Jackson Posted August 3, 2010 Report Share Posted August 3, 2010 hey dude Quote Link to comment Share on other sites More sharing options...
muggzy Posted August 3, 2010 Report Share Posted August 3, 2010 All I know is the Banshee is all stock, I assume the jets are as well. I do want to double check though. The Banshee has NO engine mods. The oil is from Yamaha and its a higher end full synthetic. I'd probably switch over to another brand though. I think the carbs are due for a 'lil cleaning though since it is an '03. I'll also check for a spark as well. My altitude is 3000 feet, at about 60-70ºF A good cleaning is a real good idea. At that altitude you could be running rich too but not so much that it won't run. Let us know how the cleaning works. Quote Link to comment Share on other sites More sharing options...
Larry's Shee Posted August 3, 2010 Report Share Posted August 3, 2010 Be sure to clean them one at a time so you don't mix the parts up. Be sure to install choke tube between carbs when done. Quote Link to comment Share on other sites More sharing options...
quadboy-55 Posted August 3, 2010 Author Report Share Posted August 3, 2010 hey dude Haha, nice. A good cleaning is a real good idea. At that altitude you could be running rich too but not so much that it won't run. Let us know how the cleaning works. For sure, will do man! Its getting a spark, I used the choke.. yes.. and last time I checked down the bore of the carb things seemed normal, that being said, its usually hard to tell "just" by the bore. The first thing I guess that would be logical to look into would be the idle circuit first and check for clogged pilot jets. Another thing I'd like to do is get a pressure test, idk what it should feel like to kick over a Banshee with normal compression (assuming my banshee doesn't have enough compression) because its very easy to kick, there is some resistance, but not a whole lot. I remember I owned a few snowmobiles and they seemed to have a lot more compression when pull starting them. The snowmobiles all ranged from 380cc to 800cc's, all twin cyl, but had more resistance when pulled. Could that be it maybe?? Be sure to clean them one at a time so you don't mix the parts up. Be sure to install choke tube between carbs when done. Yeah man, I learned a lot of stuff like that the hard way. Thanks again! Quote Link to comment Share on other sites More sharing options...
muggzy Posted August 3, 2010 Report Share Posted August 3, 2010 Another thing I'd like to do is get a pressure test, idk what it should feel like to kick over a Banshee with normal compression (assuming my banshee doesn't have enough compression) because its very easy to kick, there is some resistance, but not a whole lot. I remember I owned a few snowmobiles and they seemed to have a lot more compression when pull starting them. The snowmobiles all ranged from 380cc to 800cc's, all twin cyl, but had more resistance when pulled. Could that be it maybe?? A stock Banshee is pretty easy to kick start. My slightly overbored 360cc Banshee is easier to kick than the 200 cc Blaster I'm rebuilding by A LOT! You gotta remember that the banshee's really two 175cc cylinders spread over the range of kick so it's gonna tend to be easier. A compression test is also a really good idea though. Quote Link to comment Share on other sites More sharing options...
RagunCajun Posted August 3, 2010 Report Share Posted August 3, 2010 damn a stock banshee that spanks a yfz450. You sir have the fastest stock banshee i've heard of. welcome to HQ! Quote Link to comment Share on other sites More sharing options...
quadboy-55 Posted August 4, 2010 Author Report Share Posted August 4, 2010 A stock Banshee is pretty easy to kick start. My slightly overbored 360cc Banshee is easier to kick than the 200 cc Blaster I'm rebuilding by A LOT! You gotta remember that the banshee's really two 175cc cylinders spread over the range of kick so it's gonna tend to be easier. A compression test is also a really good idea though. I took it to one of my neighbours who knows his banshee's like the back of his hand (he owns a Banshee with a Street bike engine) and he told me the compression was a little low compared to other banshee's he's tried. He's going to get back to me and let me know whats up with it. The carburetors are fine, thats whats got me stumped. But seeing as its an '03 the rings are a little overdue I'm guessing. damn a stock banshee that spanks a yfz450. You sir have the fastest stock banshee i've heard of. welcome to HQ! He gets the launch on me every time, but it will reel him in rather quickly after 3rd gear. Quote Link to comment Share on other sites More sharing options...
chunky77 Posted August 4, 2010 Report Share Posted August 4, 2010 Welcome to the BHQ!!! Quote Link to comment Share on other sites More sharing options...
quadboy-55 Posted August 4, 2010 Author Report Share Posted August 4, 2010 Welcome to the BHQ!!! Thanks man! Quote Link to comment Share on other sites More sharing options...
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