Question about 2003 Yamaha YZ 125

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My bike will not start, it sounds like it doesnt even want to start i have just replaced the spark plug last week due to the same problem and it started first kick

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Firstly check that you have a spark at the plug gap and if so is the plug wet with fuel ?If so on both counts try rubbing a pencil lead on the plugs gap ,this may sound daft but the lead from the pencil increases your sparks power five times .But only use this idea when bike fails to fire .if problem carries on check your air cleaner unit ,and if dirty change it .

Posted on Apr 26, 2010

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Posted on Jan 02, 2017

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Hi!

Nahh, i dont think the problem is any wire, the problem is more lite the sparking plug or the carburettors. Is is after all a 1990 model, i dont know when you replaced the sparking plugs last time, but im sure you never cleaned the carburettors.

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Good luck
Nic

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