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CNYMRA Main Page -> CNYMRA Classifieds -> CNYMRA Classifieds -> 2003 CR 125 jetting HELP Please
Post Info TOPIC: 2003 CR 125 jetting HELP Please
hondacr

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2003 CR 125 jetting HELP Please
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i have a 2003 cr125, all stock that keeps fouling plugs. i use NGK plugs, and honda synthetic oil. i have tried using 32:1, and 40:1 mix and it still fouls plugs. i clean the air filter after every ride. what should i do with the jetting?

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tldfastman

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what plug are you useing. i know ngk but what type?? also do you know what the main jet is in it??

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Aaron355

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set the air screw around 1-1/4 turns out, raise the clip on the needle until that spark plug is cardboard brown.

pilot jet controls idle to like 1/8 throttle
needle controls 1/8 throttle to half
main jet is all above that

you might want to clean out the power valve if it has been fouling plugs



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crystalrev

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plug u should be using is a BR9EG that is what the bike is made to run with. That is a racing resistor plug. Expensive but last and definitly RUN. BRAAAP U should b on a sled this time a year.

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jcbemer

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Oil your powervalves also this can cause plugs to foul. If they dont open it will cause a huge power loss and also plugs foul very often and not a cheap fix once they seize.

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hondacr

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I'm using br9eg. I'm no sure what the main jet is, I'm guessing stock.

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