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Im trying to decide if its my needle jet or my main


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well my jetting is close in 16 degree celcius weather but is boggy in about 25 dergee weather which is when i usually ride

 

i bought one 190 main thinking that well do the job but well it be too much

or could i just drop my needle down further to lean it out?

 

please let me know before i buy another 190

 

it was about 11 degrees this morning and it ran a little better with the choke out on the 1st notch

 

thanks for any help

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dont really know exactly what your saying but what size carbs are you running? You were going to change your jetting so you only bought one 190 jet? Did you try to only switch one jet out or something? Doesnt make sense to me so maybe I'm just reading your post wrong or is that what you are trying to explain?

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sorry i was in a rush so i forgot to mention its stock

the dealership only had one 190 with them so i bought it

 

my bike isclose but i knowit still is rich but just wondring if 190 i too lean or if moving my needle clip up to lean it out well be better

 

thanks for the reply

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Hmmm...if it runs better with the choke on it is already lean.

Are you sure your air filter is secure in the box and getting a good seal?

Is the air filter clean?

Have you done a plug chop?

What is it doing that makes you think it is rich?

If it is box stock I would think that 200 or 210 mains with a 25 pilot would get you started.

If it hesitates when you mash the gas raise the needle a notch.

If it blubbers (technical term) when you mash the gas lower it a notch.

 

If your machine is completely stock I doubt seriously that the jetting is off. If it is not running right I would think your problem is elsewhere.

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well my plugs are black sometimes

my air screws are out about 2 1/2 with snorkle off

its an 07 so i doubt it has any other problems

i was just wondering if i raised my needels a clip that it would lean it out enough

 

i guess that if they are dark brown that it is ok to run like that?

how bad is it to run it a tad rich for ever? would i go threw top ends more or would i see no evect?

 

can anyboy else help

 

thanks

 

Mike

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If you're stock I wouldnt touch it. It sounds to me like you're lean though if anything. Since the choke being pulled out helps it. Pulling out the choke gives you less air which mean the mix is richer. I wouldnt suggest going down on the jet size. If anything go up one or two sizes and see how it runs.

 

 

A little rich = good

 

A little lean = bad

 

 

 

Youll never get your jetting perfect. Its impossible. There are to many variables. Whats perfect on one day maybe rich or lean the next.

 

Run a tad rich and you'll never have to worry.

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no man it runs better when i was 11 degrees out not 20 at about 14 degrees out it runs a little worse with the choke on if it is like 25 out it hardly runs with choke on stage 1

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