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#1 |
![]() Join Date: Mar 2016
Posts: 44
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Main Jet Upgrade did not work at all
I tried rejetting two carbs I have. When trying different jets, all led to the scooter bogging down under full throttle. The only jet I have that works properly is not marked so I don't know what size it is. I have a 24mm and 26mm carb. The unmarked jet works best in the 26mm carb. Any ideas of why the other jets led to the bogging down in both carbs?
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#2 |
![]() Join Date: Mar 2010
Location: Houston area
Posts: 945
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Can you tell by looking at the holes if the numbered jets are bigger than in the original un-numbered jet? You may be able to see that with a magnifying glass.
-Did you take a look at your spark plug tip after running the numbered jets to see if they made your insulator darker or lighter? -jetting is really trial and error, but spark plug readings can speed up the process a lot.
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"Beer never broke my heart" - Luke Combs |
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#3 |
![]() Join Date: Dec 2013
Location: Western New York
Posts: 454
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What size jets have you tried? What other changes have been made to your intake/exhaust system? Since you mentioned 24 and 26 mm carb....I presume it's a 150cc scoot.
If the unmarked jet is the original, it is probably in the 105 to 108 range. If you are changing it out with a 120 or larger, is no wonder you're having problems. Need more info from you, to be helpful. |
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#4 |
![]() Join Date: Mar 2016
Posts: 44
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Thanks for the replies guys. I was trying the larger jets, which is probably why it was bogging down. I'm still learning, so forgive me. I had the mentality that larger jet means more fuel, more power. But it looks like the 105 range is where I belong.
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#6 | |
![]() Join Date: Dec 2013
Location: Western New York
Posts: 454
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#7 | |
![]() Join Date: Mar 2016
Posts: 44
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