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dupont.07 SR Bronze Member


Joined: 02-Sep-2009 Posts: 873 Location: west

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Posted: Wed Feb 03, 2010 4:00 pm Post subject: Re: premix setting |
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ok... what if i lower down abit?? say 15ml per 1 litre of petrol...??
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dopplegangus SR Bronze Member


Joined: 24-Mar-2005 Posts: 1038

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sops SR Bronze Member


Joined: 30-May-2008 Posts: 256 Location: Singapore

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Posted: Thu Feb 04, 2010 12:06 am Post subject: Re: premix setting |
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Haha.. just play around la.. dude, if still got problem, go for jetting. Make it more lean. I think you can try minimum until got small bit of white smoke come out from exhaust. If no white smoke, maybe not enough 2T.. correct me if I'm wrong..
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dopplegangus SR Bronze Member


Joined: 24-Mar-2005 Posts: 1038

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sops SR Bronze Member


Joined: 30-May-2008 Posts: 256 Location: Singapore

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Posted: Thu Feb 04, 2010 7:52 am Post subject: Re: premix setting |
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Yep. Too little or too much also no good. I usually use 20-30 ml per litre, trying my best to follow the factory recommendation of 50:1. One of my friends who used to do mx on ktm said that the lowest he went was 15ml per litre for trail riding. For track, he used 25-30ml.
With all these headache, thumpers are a better choice for beginners. However, I do like the power and sound of a 2 strokers, but you really got to read up on your stuff. I'm still learning man..
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dopplegangus SR Bronze Member


Joined: 24-Mar-2005 Posts: 1038

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Posted: Fri Feb 05, 2010 9:08 am Post subject: Re: premix setting |
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| sops wrote: |
Yep. Too little or too much also no good. I usually use 20-30 ml per litre, trying my best to follow the factory recommendation of 50:1. One of my friends who used to do mx on ktm said that the lowest he went was 15ml per litre for trail riding. For track, he used 25-30ml.
With all these headache, thumpers are a better choice for beginners. However, I do like the power and sound of a 2 strokers, but you really got to read up on your stuff. I'm still learning man.. |
I believe, for mx, they prefer to make their bike a bit lean as it gives better power. The spark from sparkplug will be produced more as less 2t will be present. But the downside, you have to do piston maintenance regularly compared to normal riding...
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aremean_troy™®© SR Platinum Member


Joined: 26-Sep-2002 Posts: 8131 Location: Singapore

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Posted: Fri Feb 05, 2010 11:53 am Post subject: Re: premix setting |
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Im using 25ml per 1L of petrol on my YZ125. Works well for me!
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dupont.07 SR Bronze Member


Joined: 02-Sep-2009 Posts: 873 Location: west

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Posted: Fri Feb 05, 2010 4:29 pm Post subject: Re: premix setting |
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| aremean_troy™®© wrote: |
| Im using 25ml per 1L of petrol on my YZ125. Works well for me! |
so i guess my bike has carburetor problems lah... even though i tend to whack upto 4th gear, still need to change plugs halfway....
anybody has carburetors to let go...????
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dopplegangus SR Bronze Member


Joined: 24-Mar-2005 Posts: 1038

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aremean_troy™®© SR Platinum Member


Joined: 26-Sep-2002 Posts: 8131 Location: Singapore

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Posted: Fri Feb 05, 2010 11:29 pm Post subject: Re: premix setting |
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| dupont.07 wrote: |
| aremean_troy™®© wrote: |
| Im using 25ml per 1L of petrol on my YZ125. Works well for me! |
so i guess my bike has carburetor problems lah... even though i tend to whack upto 4th gear, still need to change plugs halfway....
anybody has carburetors to let go...???? |
I beg to differ... its not the carb but the settings and jettings that needs to be changed.
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dopplegangus SR Bronze Member


Joined: 24-Mar-2005 Posts: 1038

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Posted: Sat Feb 06, 2010 12:27 am Post subject: Re: premix setting |
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| aremean_troy™®© wrote: |
| dupont.07 wrote: |
| aremean_troy™®© wrote: |
| Im using 25ml per 1L of petrol on my YZ125. Works well for me! |
so i guess my bike has carburetor problems lah... even though i tend to whack upto 4th gear, still need to change plugs halfway....
anybody has carburetors to let go...???? |
I beg to differ... its not the carb but the settings and jettings that needs to be changed. |
Hahahhaa, I beg to differ again. My instinct tells me the it is the carb is having a problem. I am confident that the bike will still have the wet sparkplug problem after changing it's setting. Cos I am sure, the previous owner, couldn't have been using a wrong setting all along, especially a too-rich setting. Well, I could be wrong but I am pretty sure of it becos I have been into similar situation before.
Rae, if you want, you can change the setting first. And like I told you, a quick solution is to use an iridium or any thin tip sparkplug (if not mistaken, holeshot is selling at $9/-) but you're not totally solving the problem. Good luck. 
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privateer41 SR Silver Member


Joined: 16-Apr-2005 Posts: 2412 Location: singapore

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Posted: Mon Feb 08, 2010 5:16 am Post subject: Re: premix setting |
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Keep the 2t to 25ml and get Aremean to do the jetting on the Main jet and pilot jet, and the reason that you always fouled the plug is when you just pour the 2t straight up into the tank full of petrol, thus the 2t tends to sit at the bottom. You're supposed to mix the 2t and petrol in a separate container and give it a good mix before before pouring into the main bike tank!...Did you just pass your 2b recently??..Besi bin sawit!
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dupont.07 SR Bronze Member


Joined: 02-Sep-2009 Posts: 873 Location: west

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Posted: Wed Feb 10, 2010 5:02 pm Post subject: Re: premix setting |
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yeah... i p-plate... now then u know huh....
i pump petrol.. then put 2t.. then i shake2 the bike... still cannot uh..?
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MyXup SR Bronze Member


Joined: 15-Nov-2002 Posts: 1046 Location: NORTHWEST RIDER

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Posted: Thu Feb 11, 2010 7:33 am Post subject: Re: premix setting |
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| dupont.07 wrote: |
yeah... i p-plate... now then u know huh....
i pump petrol.. then put 2t.. then i shake2 the bike... still cannot uh..? |
Best check your Plug regularly...see pic below.
I bet there's lots of 2T present in yr tank by now if u use 20or25ml/Litre.
 Chk for normal condition...
 Adjust yr 2T amount till u get the desired condition.
 No need to change carbs or jetting....la

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dupont.07 SR Bronze Member


Joined: 02-Sep-2009 Posts: 873 Location: west

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Posted: Thu Feb 11, 2010 7:42 am Post subject: Re: premix setting |
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mine is normally both of the second pics....
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