My banshee won't idle.

[Pulsar]

My banshe doesn't want to idle or start. I can only get it to start if I use starting fluid or push start it. It's a 2000 banshee, and I've already checked a few things, compression is good in both cylinders, the carbs are spotless, spark doesn't appear to be weak, and it still runs great as long as I don't idle. I'm not really sure when it started as it happened when I was trying to figure out another problem on it, which turned out to be a bad ground on the E brake.

 

And in case it matters, the mods:

 

Toomey pipes

Boost Bottle

Carbs have been jetted (by a professional shop)

[compose2]

i have the same exact problem with my shee. i haven't exactly figured it out, but i have a good idea why its doing it. i have a tethered kill switch that was connected to my ignition coil. this can cause problems with the cdi. if you have a tethered kill switch i suggest you splice in to your engine on/off switch. splice into the black/white, and the black wire. also if you have a adjustable timing plate, you may be to far advanced

[Pulsar]

I'll have to look into it.

 

I forgot to mention that when I do get it started and rev it up I get backfires out of the right side, and it seems like the throttle is a little slow to respond.

 

And it will start when it's warm, but I have to be giving it about half throttle to get it to go, and it still won't idle. Before it was like all I had to do was sneeze on the kick start and the damn thing would start.

[itsaripper]

As a rule of thumb anytime you get a backfire you are too lean in the jet for that RPM range. Take the right carb off and clean the jet again. Something is plugging that main jet. Also sometimes there is a lot of crapolla on the little screan up inside the fuel tank and that will restrict the gas enough to let the right side starve and get a backfire.

[Rare Scottish Tree Badger]

I'll have to look into it.

 

I forgot to mention that when I do get it started and rev it up I get backfires out of the right side, and it seems like the throttle is a little slow to respond.

 

And it will start when it's warm, but I have to be giving it about half throttle to get it to go, and it still won't idle.  Before it was like all I had to do was sneeze on the kick start and the damn thing would start.

341021[/snapback]

 

When I first got my Banshee, it was a nightmare to start. But once it was warmed up, it would start no problem. I can't say what the tickover was like 'cos it was set up, at that time, for no idle. ... My problem was the state of the flywheel and pickup coil. I gave it all a good clean and re-gapped the pickup coil. Starts first time, every time now!

 

I'm not saying that's your problem, but it's worthwhile checking.

 

It does sound like more of a fuel issue. .... Swap your plugs over and see what happens with the one cylinder missfire. .... See what the plugs are telling you while they're out.

 

Good luck.

 

Rare.

[MILO]

make sure you don't have the carb bowls switched. the left one has to have the starter jet in the bowl. make sure you're crossover tube is on between the carbs. check to see if the carbs are in sync too. badly clogged air filter?? need new plugs? doesn't sound electrical though if it's fine once it warms up.

[Pulsar]

It still doesn't idle even when it's warm, but like I said I can get it to start if I give it about a half throttle. I'll look into all these things you guys have mentioned and I'll let ya know.

[Ducman]

Plugged pilot jet or air leak is my guess

[Pulsar]

Just another update. Checked the carbs again, was a very tiny amount of dirt in the right bowl, cleaned it out and put it back together and still have the same problem. Checked to see if the carbs were in sync, and they are.

 

It's starting to look like I might have to drag it down to the dealership

[MILO]

Plugged pilot jet or air leak is my guess

341260[/snapback]

yeah, what he said. don't go the the stealer just yet. it's probably something simple. keep searchin.

[Rare Scottish Tree Badger]

yeah, what he said. don't go the the stealer just yet.  it's probably something simple.    keep searchin.

341535[/snapback]

 

Are you using compressed air to blow through your jets when cleaning?

 

Rare.

[slowpokebanshee]

had this problem before when I bought new gas cans.....the nice quick fill ones, had plastic in them that did not get rinsed out, and my fuel tank does not have the "screen"

so I ended up getting some plastic shavings in my pilot jet....just pull out all four jets and blow through with compressed air/carb cleaner etc. make sure thay flow, while you are in there you can figure out what size jets are in it

[compose2]

check to make sure your floats are at the right level. if the needle valve in the bottom of the carb is not gapped right, then you won't be getting the proper amount of fuel. this would result in it not idling right and would probly lean the motor causing it to backfire as well. float level should be .800-.880 when the carb is upside down. the float arm should rest on the needle valve but the compressing it. if its compressing it, just bend the little tang

[Pulsar]

Well I got it fixed, and it was something so simple I feel like a retard for not seeing it these past couple weeks. The little hose that connects the carbs together had come off on the right carb, but I never could see it cause there are so many wires and hoses that sit over it. I only thought to check it after I went over a jetting tutorial and noticed that hose in a picture.

[MILO]

Well I got it fixed, and it was something so simple I feel like a retard for not seeing it these past couple weeks.  The little hose that connects the carbs together had come off on the right carb, but I never could see it cause there are so many wires and hoses that sit over it.  I only thought to check it after I went over a jetting tutorial and noticed that hose in a picture.

341704[/snapback]

woohoo, i was right! just think how you'd feel if the stealership told you that, after about $100 of labor costs! i always search the HQ before even considering contacting a stealership. glad to hear you got her fixed up.