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Old 09-25-2012, 08:06 PM   #8
JeffS77
cheap bastard
 
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Joined: Apr 2006
Location: Riverside , CA
Oddometer: 3,255
[QUOTE=anotherguy;19679762]
The needle jet/emulsion tube determines the raw amount of fuel available across the range and the needle taper is used to fine tune delivery in individual portions of the range.
[QUOTE]

The tube is a pretty damn important piece I think a lot of people over look and just chase with jets and needles.. I learned the hard way in the past that this can be a deciding factor to weird mid range issues.
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