Bike suddenly won't idle?

[KDXGarage]

That is good that you could just order a new cap. Hopefully, they can get it to you sooner.

[PacificNWRider]

I would definitely give that tank a good rinse, and also still recommend changing out the petcock. It's got to be full of plastic bits and dust/dirt. You can take the gas cap off and the bike will run the same, its only a vacuum lock that would affect the idling of the bike. If you think you found the problem it has to be from a dirty fuel tank/petcock!

Glad to hear the bike is running good after the rebuild

[John_S]

I agree with PacificNW. My bike had a split stock gas cap when i bought it. I was anxious to ride so I would just put a gallon in it and tear around the work lot. It didn't have an affect on the idle.

[DenverKdxRider]

OK so for posterity even though the gas cap disintegrated that STILL wasn't' the issue. It was actually the air filter! I went to my riding spot and it still wasn't idling so I took off the air filter and ran it and it started to idle fine and I could adjust it. I had cleaned it a while back and it definitely wasn't dirty but I did notice a lot of oil in the air box. I must have over oiled it.

Anyway..I ordered a new pre-oiled air filter and need to brush up on how to properly oil an air filter!

[KDXGarage]

Good!

Thanks for the follow up.