Fix a sticking float in the carb?



3 replies to this topic
  • Freestyle-MX-Racer

Posted August 18, 2013 - 07:58 PM

#1

I picked up an ole' xr80. And the carbs float is sticking. It wiggles around fine and I'd t stuck when the bowls off but it leaks gas out the overflow. I turn the gas off and it still leaks whatever is left in the bowl till its under the overflow. How can I fix this? Anyway to without buying a new floater?

  • Kah Ran Nee

Posted August 18, 2013 - 08:06 PM

#2

Remove the float, float pin, and float needle.

Get a flashlight, and look at both the needle (for a groove in the rubber) and the seat (for pitting).

If you see either, you need to replace.

 

But, most likely, the only problem you have is CORROSION.

Take some brass polish (Brasso) on a rag, and polish the cavity that the float needle slides up inside of.

You need to polish it, and the body of the float needle, so they not longer 'hang up' inside the float needle cavity.

That is usually all that is needed.

It may take 1 minute of polishing, it may take 15, depending on how bad it is.

Do not use any power tools for this.......

 

Obviously, if  the needle and seat are worn, you then need to replace them.



  • Freestyle-MX-Racer

Posted August 18, 2013 - 09:00 PM

#3

Remove the float, float pin, and float needle.
Get a flashlight, and look at both the needle (for a groove in the rubber) and the seat (for pitting).
If you see either, you need to replace.

But, most likely, the only problem you have is CORROSION.
Take some brass polish (Brasso) on a rag, and polish the cavity that the float needle slides up inside of.
You need to polish it, and the body of the float needle, so they not longer 'hang up' inside the float needle cavity.
That is usually all that is needed.
It may take 1 minute of polishing, it may take 15, depending on how bad it is.
Do not use any power tools for this.......

Obviously, if the needle and seat are worn, you then need to replace them.

ok thanks! Ill do it tomorrow and post pics.

  • mustangeric

Posted August 26, 2013 - 09:26 AM

#4

i just went through this with one of my xr70. after many failed attemps to fix it by removing and cleaning the carb. i ended up taking the tank off, cleaning it out. When i removed the petcock for inspection i noticed it had dry rotten and was letting trash by that was stoping the needle from setting properly. I removed the stock petcock filter and installed new fuel line and an inline filter. Problem solved.







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