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popping on deceleration.

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i know there have probably been posts on this already, but each bike is an individual instance:

my bro got a 04 rmz250

it pops bad going into corners when you chop the throttle.

trying moving just the clip. not much luck.

went one step leaner and one step richer with the main jet.

-the leaner jet gave us a way-white plug.

the richer jet made it a lot better (my dad moved the needle one clip richer when he installed the richer jet also.)

input, suggestions? (it still pops some.)

i'm in butler, PA (alt. is about 1050 i think)

just another step richer on the jet, or move the needle clip?

thanks

racer36

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some popping on decel is normal and the clip and main jet have little effect on that. You need to go up on the pilot jet at least 1 size. Also make sure the air screw is turned out from seated 1 1/2 to 2 turns.

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The screw in front of the float bowl facing down is a fuel screw. It regulates fuel instead of of air like a air screw. A 42-45 pilot should help. Many are also using the 4th clip position from the top.

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you are right of course ochster. I spent too many years working on 2-strokes and they are all air screws to me, even though I know the difference :thumbsup:

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