cant get it to idle

[mechaniac]

Well I am running again. This is my first 2-stroke money pit, well not including the oddyssey in pieces. Anyways. I have a 98 banshee that was tuned perfectly with the stock set-up. I decided to put a 2 into 1 carb set-up on it for my riding style( my daughter has a big bear 400, so i spend a lot of time looking back, and fouling plugs on trails).

 

What I have:

98 banshee mostly stock except for overbore and replacement crank.

Trinity stage iv 2 into 1 intake with Keihin PWK 35mm carb.K&N pod filter and sock.

 

I can not get it to idle. It runs well, warms up good.Seems powerful and responsive. but you have to slightly hold the thumb throttle to keep it running. I took the filter off and i cant even see the slide move up or down at all in this process. I have run the idle screw in and out as specified to no avail. I dont have a leakdown or compression tester, But what are the chances of an air/vacuum leak in the intake system? Would this cause it to die with no throttle?If there is a leak its between the trinity intake and the boot to carb, both are trinity parts.Didnt seem like there was any squish when I reassembled it on my bike. Can I use a little sealant on these surfaces? Also, Is there a decent jetting kit to buy or do you buy individually what you need? I have had the carb out 3 times and its no where near as bad as working on the stock setup. My elevation is 2700 and the areas we ride are in between 2800 and 2400. I bought this set-up used on ebay, cleaned the carb, but didnt note the jet sizing. Can someone give me an idea of what size jets I can order for my set-up? Also when I put the paddles on it sounds like my chain is jumping on the sprocket when I turn left and gas it. I replaced the tensioners and have a new chain.Not sure if it does it in more than one gear. Does not happen when I have the stock rear tires on.

 

Please help, I cant afford to send it out for repair anymore and I would love to conquer the world of jetting and actually ride it for more than an hour without something else breaking.....

 

Thanks to all for your help.

 

Sincerely,

 

Eric

Midland, Texas

[00sheerzr]

Well I am running again. This is my first 2-stroke money pit, well not including the oddyssey in pieces. Anyways. I have a 98 banshee that was tuned perfectly with the stock set-up. I decided to put a 2 into 1 carb set-up on it for my riding style( my daughter has a big bear 400, so i spend a lot of time looking back, and fouling plugs on trails).

 

What I have:

98 banshee mostly stock except for overbore and replacement crank.

Trinity stage iv 2 into 1 intake with Keihin PWK 35mm carb.K&N pod filter and sock.

 

I can not get it to idle. It runs well, warms up good.Seems powerful and responsive. but you have to slightly hold the thumb throttle to keep it running. I took the filter off and i cant even see the slide move up or down at all in this process. I have run the idle screw in and out as specified to no avail. I dont have a leakdown or compression tester, But what are the chances of an air/vacuum leak in the intake system? Would this cause it to die with no throttle?If there is a leak its between the trinity intake and the boot to carb, both are trinity parts.Didnt seem like there was any squish when I reassembled it on my bike. Can I use a little sealant on these surfaces? Also, Is there a decent jetting kit to buy or do you buy individually what you need? I have had the carb out 3 times and its no where near as bad as working on the stock setup. My elevation is 2700 and the areas we ride are in between 2800 and 2400. I bought this set-up used on ebay, cleaned the carb, but didnt note the jet sizing. Can someone give me an idea of what size jets I can order for my set-up? Also when I put the paddles on it sounds like my chain is jumping on the sprocket when I turn left and gas it. I replaced the tensioners and have a new chain.Not sure if it does it in more than one gear. Does not happen when I have the stock rear tires on.

 

Please help, I cant afford to send it out for repair anymore and I would love to conquer the world of jetting and actually ride it for more than an hour without something else breaking.....

 

Thanks to all for your help.

 

Sincerely,

 

Eric

Midland, Texas

 

i would def. get in there and check those jets out, and you said you mostly stock too so maybe your pilot jet is too big, does it spuuter or bogs anywhere in the rpm range

[sleeper06]

drop that pilot a couple sizes I think those carbs came with big pilots out the box

[mechaniac]

drop that pilot a couple sizes I think those carbs came with big pilots out the box

I will pull the carb apart tonight to see what particular jets I have in the carb. It doesnt seem to be lean anywhere in the powerband, doesnt pop, stutter or hesistate anywhere except the instant you take all tension off the thumb drive and it dies. Pilot jet is the same as slow jet right? I am going to make sure its clean.

 

Thanks for the replies..

Eric

[AKheathen]

TORS.........nuff said..

 

haha, but really, unplug the little black box under the gas tank, to the left of the coil. then, you can get it to idle. now, for the chain jumping. grab the rear grab bar and shove it side-side. you should be able to see the swingarm move with slack in the pivot bearings. next, grab the sprocket and see how much play is on the splines. they will wear out enough for it to skip across the splines under load, and you will end up having to replace the hub and likely axle. if you don't find alot of play, then, ratchet strap the swing arm to the frame by hooking to the upper carrier bolt tube and suck it untill the sprockets and pivot bolt line up strait, and tighten up the slack in the chain, and try it out. i'm assuming you already inspected the sprockets. if you run out of adjustment, and have stock sprockets/swinger, then it's time for a new chain.