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Gas leaking from carbs into airbox

  • Thread starter Thread starter robsGS850
  • Start date Start date
Ok! You're right, it's changed and that's what matters.

I have other questions, this time relating to needle valves. As Robertbarr suggested, I took a look at my needle valves. One is scored so is definitely being replaced. One looks new and the other two... well that's were I have questions. They are not scored, yet they show a ring, possibly at the position where they mate with their seat.

1) What could the ring be indicating?
2) Do they need to be replaced?

One thing I need to remind here is that I do not know which carbs are leaking. I'm taking for granted that the scored one is shot and can't possibly provide a good seal. Oh btw, I also have 2 seat o-rings that are cracked: one on the scored valve, and the other on one of the "ringed" valves.

I know the obvious and easy (and expensive) solution is replacing all four needle valves and seats with OEM parts. But how can I pinpoint the problem without going to a local shop?
 
The needle valves and seats are not that expensive and getting new ones along with o-rings will solve your problems.That's all there is to it. Replace them and you will be fine.
 
Hey

Got everything changed. It almost seems like the engine is running smoother ?!? Probably just an illusion. Anyway, thank you all for your helpful comments.
 
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