backfireing and crazy idle

[DistilledMetal]

My gy6 in my baja dune 150 has a problem. When its running it will sudenly begin to backfire and sputter like crazy. It used to happen every once in a while but now it begins to go crazy as soon as you start it. I have checked everything
Adjusted the valves cleaned the carberutor checked the timing (which was a tooth off) and looked for airleaks all with no result. Someone told me it might be the cdi so a performance one is on its way. Any ideas?

[LEEEZARD7]

typically backfires are from incorrect timing.

[DistilledMetal]

But it would still run fine sometimes. Can it run with bad timming?

[LEEEZARD7]

i dont know enough about the gy6 to comment. im sure some of the more knowledgable ppl will chime in. happy buggying

[DistilledMetal]

Hopefully.

[ckau]

check your wiring for poor contacts

[KID4LIFE]

Check your coil and cdi wires to make sure they are clean and tight. If that doesnt work try a coil. When mine went out it was doing the same thing as yours. Run fine sometimes and other times would spit and sputter. Progressively got worse.

[DistilledMetal]

Yea it is progresively get worse i already have a performance coil and cdi on its way.