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80cc bbk help
by: JerryScript - Apr 24, 2015 11:28:30 GMT -5
via mobile
Post by JerryScript on Apr 24, 2015 11:28:30 GMT -5
The pilot jet will be the issue while starting, what size do you have in there now?
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Post by devinchasteen15 on Apr 24, 2015 12:13:49 GMT -5
The pilot jet will be the issue while starting, what size do you have in there now? Stock im not sure what size |
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80cc bbk help
by: JerryScript - Apr 24, 2015 12:51:33 GMT -5
via mobile
Post by JerryScript on Apr 24, 2015 12:51:33 GMT -5
Try restricting your air intake while starting, if it helps, then you need a larger pilot jet.
The pilot jet provides fuel throughout the throttle range, the main jet only when the butterfly is open, and vacuum is high (not during starting even if you turn the throttle).
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Post by devinchasteen15 on Apr 24, 2015 13:13:23 GMT -5
Try restricting your air intake while starting, if it helps, then you need a larger pilot jet. The pilot jet provides fuel throughout the throttle range, the main jet only when the butterfly is open, and vacuum is high (not during starting even if you turn the throttle). OK then I defiantly need one because sometimes I have to choke it like that for it to even start |
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80cc bbk help
by: JerryScript - Apr 24, 2015 13:41:28 GMT -5
via mobile
lain likes this
Post by JerryScript on Apr 24, 2015 13:41:28 GMT -5
You ran well at speed on your test ride because the low pilot jet and high main jet combined for a decent mix. Switching to a larger pilot and smaller main should fix your starting issues, and still provide good mix at speed. You may need to adjust the needle height to fine tune it, that is the final step (usually only needed if you experience bogging during acceleration).
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