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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
05 YZ250 Crank Seals
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[QUOTE="Big Bore Stroker, post: 1229511, member: 70619"] The idle mixture screw's air pocket was completely filled with filter oil. The carb was not mixing any air with the fuel at idle speed. The only air it was getting at idle speed was through an air leak (I suspect is the crank seal) that's why I got no response from the engine while adjusting the mixture screw. Now with clean carb I have air coming through the mixture screw pocket and from the suspected air leak causing the run away at idle speed. Top end is going to be replaced before the bike is rode again due to the fact that I have no history of service on the bike. We'll know more as soon as I pressurizer the crank case,hope to be able to that tonight. All jets are stock in this carb. [/QUOTE]
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Forums
Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
05 YZ250 Crank Seals
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