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2009 crf450r fouling plugs

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I'm lookin at 2009 crf450r but it keeps fouling the spark plugs but I was wondering if I was electrical or fuel

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I'm lookin at 2009 crf450r but it keeps fouling the spark plugs but I was wondering if I was electrical or fuel

 

well if its infact fouling plugs, maybe somethings got the injector stuck open?

you can take the injector out and power it with a couple d batterys and spray barrymans chemtool b12 carburetor cleaner through it normal flow, and then reverse flow.

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 had a similar problem with a 12. It was due to a cracked head sucking in coolant.

the plug comes out grey if its due to coolant

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