Need help jetting carbs

[bksdesign]

I bought an 02 banshee, ran ok for awhile then I washed it and it ran like shit. Some guys on here told me to clean the carbs. I did that today and its running better, but still bogs a little off idle. I am at sea level or real close and its around 50 to 70 degrees here usually. The bike has toomy pipes on it and K&N precharger filters. It has the tors removed and a twist throttle. It starts on the first kick but as I said it bogs at low rpm. I read a really good jetting info sheet that says I should be running 340 mains and 30 pilots. My jets right now are 280 mains and 25 pilot. I would like to know what jets you think I should be using. Next on the carbs it has the taped idle screws in it and it has a brass screw coming in at an angle at the rear edge of the carbs. What are they and how should they be set?

 

 

Thanks for any info in advance.

[wesw]

for stock bike with stock porting you should be fine with stock pilot 25 and mid to 4th clip on the needle depending on what needle your running and with open air box i wouldnt run anything less than a 300 main

 

plug chop it and go from there.

 

if your needle is way lean it will bog gasping for air.

[bksdesign]

for stock bike with stock porting you should be fine with stock pilot 25 and mid to 4th clip on the needle depending on what needle your running and with open air box i wouldnt run anything less than a 300 main

 

plug chop it and go from there.

 

if your needle is way lean it will bog gasping for air.

 

What do you mean if my needle is way to lean it will bog gasping for air? it does bog and kinda is gasping. By needle i assume you mean the setting on the needle you mentioned above? What would make it do that if the setting are the same as they have been for awhile. the last owner lives not far away and I asked him about jetting and he said it was jetted by a shop and ran fine for him. what else could mimic the neddle being wrong if it was right before and I havent changed it?

[sleeper06]

340s are way rich ,290 main,stock pilot ,1 turn out on the brass screw(angled back of carb),take needles out of slide put clip on #4 from blunt end

[bansheesandrider]

I would do a plug chop at the RPM it is bogging at and see where you are at. My gut feeling is that you need a 27.5 pilot and your main should be in the 280-300 area and run the clip in the middle.The screw at the back corner is your idle mixture screw. On the 96 bike my wife had we had to go to a 27.5 pilot when we put a K&N 2 into 1 filter on it with stock pipes at sea level, to get rid of the bog it had(and there was no air leak, I checked).

[Larry's Shee]

Only thing different is that he washed it, says ran good before, therfore water got in somewhere.

Do you have TORS still? Check all conections and switches. check plug caps. Have you tried it since it's had chance to dry out good?

[bksdesign]

Only thing different is that he washed it, says ran good before, therfore water got in somewhere.

Do you have TORS still? Check all conections and switches. check plug caps. Have you tried it since it's had chance to dry out good?

 

 

Yeah thats true the only thing that is different is I washed it. When I first ran it after washing it ran like shit for a couple days, but I did not run it long. It would act like the trottle was stuck and backfire. I then took the carbs off and cleaned them. I then ran it and got it hot but the off idlle bog did not go away. Since I am new to banshees, I was amazed at the top end power so it may have had the bog all along. I only rode it a few times before I washed it, but my gut says the bog is new.

 

The tors is removed, and I do not know where to check for the wires. I saw on top of the heads there are 2 plugs that are not connected to anything. Is that where the the tors use to plug in?

[bksdesign]

Hey guys thanks for the help. I solved the problem. The jetting was fine. Even though I had put new plugs in it. One of the plugs went bad. It would not supply spark at idle but would work once it was up on the rpms. Aleast that is what I think it was. I took the plugs out and cleaned them and when I put them back in and started it I noticed the sound had changed. I realized I had moved the problem so I put new plugs in it again and its running fine. Thanks for the help.