Burping, popping, intake backfire - After filter upgrade?

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Burping, popping, intake backfire - After filter upgrade? by: tweakgames - May 6, 2015 13:05:14 GMT -5

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Post by tweakgames on May 6, 2015 13:05:14 GMT -5

Hello all,

I am working on a 2006 150cc GY6, been fixing it up after it was abandoned. Have been riding it for a couple months now, and decided to upgrade the air filter to a uni type thing. I ordered a 125 main jet with it and swapped it out the stock one when I changed the filter. Noticed a power increase right away, but I have a burping, or popping or something happening. When it happens I feel a very very slight loss of power for a split second. I then ordered a 10 pack of main jets and tried others. I went from 115 to 130 and they were all the same, except 115 made the spark plug have white ash, and the 130 made the spark plugs black. I settled on 120, but I still have the burping. It seems to come and go, and isn't steady. It also seems to happen more part throttle, and only happens when accelerating or wot. Not while idling. Exhaust is stock. It runs relativity well, just the burping.

Any ideas on things I should try?

Thank you guys.

lain PM lain lain's Posts lain's Threads Senior Rider Currently Offline Solving one problem after another Posts: 1,566 Likes: 228 Joined: Dec 16, 2014 10:54:33 GMT -5	Burping, popping, intake backfire - After filter upgrade? by: lain - May 6, 2015 15:45:06 GMT -5 Reply Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by lain on May 6, 2015 15:45:06 GMT -5 Adjust the needle to make the mix a little leaner above idle.

tweakgames PM tweakgames tweakgames's Posts tweakgames's Threads New Rider Currently Offline Posts: 6 Likes: 0 Joined: May 6, 2015 12:52:19 GMT -5	Burping, popping, intake backfire - After filter upgrade? by: tweakgames - May 6, 2015 18:04:22 GMT -5 Reply Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by tweakgames on May 6, 2015 18:04:22 GMT -5 I will look into how to adjust the needle. Alright, burping and popping through the intake means too rich?

lain PM lain lain's Posts lain's Threads Senior Rider Currently Offline Solving one problem after another Posts: 1,566 Likes: 228 Joined: Dec 16, 2014 10:54:33 GMT -5	Burping, popping, intake backfire - After filter upgrade? by: lain - May 6, 2015 18:42:01 GMT -5 Reply Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by lain on May 6, 2015 18:42:01 GMT -5 during accel yes means too rich, if during decel its too lean.

tweakgames PM tweakgames tweakgames's Posts tweakgames's Threads New Rider Currently Offline Posts: 6 Likes: 0 Joined: May 6, 2015 12:52:19 GMT -5	Burping, popping, intake backfire - After filter upgrade? by: tweakgames - May 6, 2015 19:24:58 GMT -5 Reply Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by tweakgames on May 6, 2015 19:24:58 GMT -5 Great, thank you. Do you still recommend I keep the same main jet size?

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Burping, popping, intake backfire - After filter upgrade? by: lain - May 6, 2015 20:56:30 GMT -5

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Post by lain on May 6, 2015 20:56:30 GMT -5

May 6, 2015 19:24:58 GMT -5 tweakgames said:

Great, thank you. Do you still recommend I keep the same main jet size?

Experiment until you find the sweet spot for your setup. When you can accelerate smooth and/or fast and when the engine drops back to idle speed fast and smooth when you let go of the throttle and the plug shows up mocha/light brown is when you are at the sweet spot. I like to mess with jets and adjustments till I reach too rich then I go down in the jets or adjustments I made to get the settings right under rich.

Burping, popping, intake backfire - After filter upgrade? By tweakgames (Read 729 times)

Post by tweakgames on May 6, 2015 13:05:14 GMT -5

Post by lain on May 6, 2015 15:45:06 GMT -5

Post by tweakgames on May 6, 2015 18:04:22 GMT -5

Post by lain on May 6, 2015 18:42:01 GMT -5

Post by tweakgames on May 6, 2015 19:24:58 GMT -5

Post by lain on May 6, 2015 20:56:30 GMT -5

Shoutbox