Banshee bogging bad on low end

[clayton00grand]

OK here is the breakdown on things, I have ridden my bike more in the last 2 months then I ahve probably in the last 2 years. I had rebuilt this thing about 6 years ago, it has always run very very strong, , I have noticed it has been getting more difficult to start if I dont run it in say like 1-2 weeks, 5-7 kicks insttead of 1-3. Warm first kick everytime, Anyway about 1 month ago I put a timing advance key in and wow noticed a huge power difference by the way thanks everyone on that, I did some of my own reading. And I have done compression check not long ago and had 120 each, havnet done it since this problem it just started doing it. You will be running in tight woods or wherever and say your running 1/4-1/2 throttle, then bogs way down and you blimp the throttle and its fine. I was riding it last night going down our farm path beside buddy to get to the fields we ride and Im in second or 3rd don't remember running 1/4-1/2 and boogs way down, kinda blimp it and comes back. This is very annoying in in the tight woods and steep hills like the trail I have at my grandparts farm, the whole trails in on the side of a hill, and runs through the creeks which have no water in tem right now anyway.

 

 

Mods list is Aftermarket pips not sure what brand, answer silencers, dual Mikuni 28mm carbs, K&n filter, no tors unplugged and left harness there and electric taped up just because didn't feel like removing all of it. No parking break I have the ASV clutch, +4 degree timing advance. Cool head, with I believe 19mm domes or 21mm Its been so long. I run 93 octane 32to1 mixture of amsoil dominator. Boost bottle Thats all that I can think of I believe when it was rebuilt a while back its .20 over bored with pro-x pistons. Like I said I haven't had any problems until here as of late. Is there any suggestions to do or what would make it do this, I really need to get rid of low end bog, My 250r I have has little to no bog in it at all, very strong bottom end.

[clayton00grand]

I meant to add when I first start it up it smokes only out of left pipe until you give it a bit of throttle, and is maybe running for ohh say 1 minute, then both pips smoke.

[dirtfreak]

I meant to add when I first start it up it smokes only out of left pipe until you give it a bit of throttle, and is maybe running for ohh say 1 minute, then both pips smoke.

 

 

 

try some new spark plugs.maybe one partially fouled that would explain why smoking out of one side more than the other till you run it and it cleans up the plug some.and i would do a compression check again see what kind of numbers you got.maybe even lean your mixture some will make plugs last longer plus add more power.plugs may or may not be you problem but would be a good start on your process of elimination to you problem.

[clayton00grand]

OK thanks I was going to try that meaybe but didnt if any other suggestions, based on my mods what you guys think my jets should be, ohh I do have reed spacers too if that changes anything. and how about air/fuel mix screws.

 

Thanks again

 

 

 

try some new spark plugs.maybe one partially fouled that would explain why smoking out of one side more than the other till you run it and it cleans up the plug some.and i would do a compression check again see what kind of numbers you got.maybe even lean your mixture some will make plugs last longer plus add more power.plugs may or may not be you problem but would be a good start on your process of elimination to you problem.