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General Category >> Rubber Side Down! >> carb problem.
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Message started by TheFid on 07/20/12 at 22:39:20

Title: carb problem.
Post by TheFid on 07/20/12 at 22:39:20

My mate's problem is (we think) his carb, which is allowing fuel to run from the tank , into the engine, and out of the engine breather. Any ideas before we start a strip down?.
His bike is a 1993 model.
Another question, I have removed my tank a few times now without thinking of why the fuel does not run out when i lift it off. Why?

Title: Re: carb problem.
Post by justin_o_guy2 on 07/20/12 at 22:42:05

Float isnt seating the valve, could just need adjusted, petcock is leaking if fuel comes out with it in any position other than prime, when the engine isnt running,m

Title: Re: carb problem.
Post by verslagen1 on 07/20/12 at 22:43:42

2 possibilities, bad float valve or bad petcock diaphragm

pull the vac line, shouldn't be any gas in it.

Title: Re: carb problem.
Post by Digger on 08/03/12 at 20:38:48

1B272A09262B4F0 wrote:

....Another question, I have removed my tank a few times now without thinking of why the fuel does not run out when i lift it off. Why?

If you're using the OEM petcock and the lever is set to "ON" or "RES", then the petcock should not flow any gas unless a vacuum is applied to its vacuum port.

So, if you have an OEM petcock set to either "ON" or "RES," what you're seeing is normal OEM petcock behavior.