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Post by mtrammel9122 on Mar 28, 2019 9:13:09 GMT -5
I recently installed a 80 cc kit on my gy6. But I haven't done much else with it yet, pretty much still stock otherwise. Now it backfires when I slow down and it actually seems to go slower with the bore kit. I have an adjustable carb and I am trying to tune it, but its not helping much. I plan on upgrading the exhaust and air filter and getting a derestricted cdi. Would this be the correct way to go? And would increasing piston size without upgrading the filter and exhaust cause the backfire? Any advice for a newbie would be appreciated.
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Post by 90GTVert on Mar 28, 2019 9:43:10 GMT -5
What have you done while trying to tune the carb?
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Post by mtrammel9122 on Mar 28, 2019 10:02:00 GMT -5
It's an adjustable carb. It started of set pretty well for the 49 cc. I readjusted the pilot jet for more fuel. But it was backfiring before I adjusted it. It's set mostly "open" I guess. More fuel thru the carb. It is running better than before I turned it up/open. I am sure it still needs some tuning, but I don't know how much the exhaust and intake is affecting it either.
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Post by pinkscoot on Mar 28, 2019 10:11:46 GMT -5
What size jets are you using?
Watch this video about tuning your carb and CVT:
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