HELP HELP HELP 2003 yz 125

Posted April 19th, 2008 by David patterson

i just bought a yz 125 . it sat for about 2 years. i changed the petrol and two stroke. its fouls the spark plug after about 20 seconds. it keeps doing this.

 

 Ive no idea how to sort this? Any ideas?????

5
Average: 5 (1 vote)

Your problem.

Your going to need to jet out the carborator, and maybe turn the idol down, i had the same problem with mine, i had to fix it because im trying to sell my 2001 honda cr80r

i have a yz 125 1999 that

i have a yz 125 1999 that burned up plugs but i fixed mine by because there was a recall on my bike

To fix it you hve to re jet your carberator

call a dealer and they'll tell you how

yes

both thesae answeres are right you may need to clean the carb rejett it and your floats may have a problem

YZ jetting

Be careful when makihg jetting changes one size at a time and read the plug. also what is your premix ratio and what oil are you using do i need to tell you its the main jet were dealing with. Carry some extra jets with you  and dont be afraid to get your hands dirty so to speak

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