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New 400SX hard to start.

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I bought a new left over 2001 400sx and put about two hours on it.No matter what I do it dosen't start consistantly.It came with the air filter just soaked with oil,I changed that it helped.I had a 2000 400sx that started great.Please help goat.

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If its been sitting, I would try some known fresh gas and try blowing out all passages on the carb. My YZ400 started to get hard to start so I did the carb treatment and it worked wonders. The carb on these two bikes are pretty much the same thing.

Later,

Concho

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