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Yamaha MX & Off-Road Dirt Bikes
Carby Re-Jetting Advice.
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[QUOTE="yammieman, post: 1430603, member: 124169"] hey everyone. Lately ive been fouling a lot of plugs. I had recently gotten the bike back from a top and bottom end rebuild done along with them re-jetting carby at a bike shop about 3 weeks ago and ive had to change a plug after every ride ever since they did. Went to start the bike today and it would not start at all. I took out my spark plug just to check it and it was covered in wet oil. Never had that problem before to that extent..only been since they re-jetted it and since ive gotten the bike back from them. What are my options in terms of richening up or leaning out the oil....mix my oil/fuel at a different ratio?? or re-jet?? Its a Yamaha YZ 250(2 stroke) motocross bike and currently my needle clip position is set to stock(2nd from top) and my main jet is set to 42 and I always been mixing at 40:1(250ml to 10 litres) and using the stock BR8 spark plug(but don't want to go too hot of a plug) I was thinking about moving the clip on the needle down 1 spot and setting it on the 3rd clip position instead...but not too sure if it would be safe to do so or or what the impact would be?..or should i just leave it at stock and mix a different fuel/oil ratio? I mostly use the bike for trail/bush riding now days...but still sometimes go to MX tracks. [/QUOTE]
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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
Carby Re-Jetting Advice.
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