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Post Info TOPIC: Recurring pilot jet plugged


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Posts: 2
Recurring pilot jet plugged

I have a 2006 TTR 250 that sat for a few years.  After it was taken out of storage, the carb was soaked and rebuilt (All balls kit), fuel lines replaced, inline fuel filter replaced, etc.  The pilot jet continually plugs up.  I've had the carb off countless times (I've actually gotten pretty good at it).  The pilot jet is a 50.  I'm looking for recommendations of what to do.  I've used probably a dozen cans of carb cleaner.  Usually once I clean it out, it will run good for a month or 2 and then plug up again.  When I take the carb bowl off, it looks fairly clean.

Any advice?



Super Guru

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Posts: 1482

Does it sit for a while before it plays up


I splash a bit of fuel injector / carby cleaner in the tank now and then before a ride  (read instructions to get  correct ratio)  havent had any carb troubles on the  ttr  since 

-- Edited by ttboof on Sunday 17th of May 2020 11:14:03 PM


Senior Member

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Posts: 291

New pilot. As I recall the OEM was like $8. They can't be cleaned. But it is odd that yours gums up so fast, something deteriorating in the tank or lines and you got gunk instead of gum?

I spent a long time messing with the carb and finally concluded that I couldn't get the pilot jet fully clean. All has been well for me since replacing the pilot (with the bike that is).

Maybe also drain the carb if its going to sit but I think realistically to keep the pilot dry you probably have to take the carb apart, I'm not sure why I bother to run it dry must be my YZ hangover.

If yours is an '06 with a #50 pilot I'm guessing you're in the US. Clear gas maybe? Maybe dump and clean the tank?

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