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02 CRF450 Boggs when pinned.

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Anybody have any idea why my 02 450 chokes when I have the throttle pinned? If I let off a little it stops. Usually when exiting a turn, or on a long straight.

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Do you mean that it will bog when you go from 1/2 or 3/4 throttle to wfo? Or do you mean it will bog when opening the throttle quickly from closed or 1/4 throttle?

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depending on the answer to the question above, sounds to me like you maybe be a little rich in the jetting, or xell pump is too much (seems weird to go out by itself)

Of course you could just weigh too much like me. Then a cam fixes that problem up right quick 🙂

good luck

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It happens when opening the throttle quickly from about 1/2 to full. And when wfo.

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