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post #1 of 6 (permalink) Old 06-10-2011, 05:21 PM Thread Starter
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air cut off valve

i am cleaning my carb and how do i check the cut off valve to make sure it is ok i had someone suck on one end to create a vacume and i blew on the other end and air went through it is that how you check it
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post #2 of 6 (permalink) Old 06-10-2011, 05:34 PM
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While pulling a vacuum on the hose on the valve, you shouldn't be able to blow through the other two ports, but you should be able to blow through the ports when no vacuum is being applied.

Most 4-wheeler problems are caused by a loose nut connecting the handlebars and the seat!!

You only need two tools in life -- WD-40 and duct tape. If it doesn't move and should, use the WD-40. If it shouldn't move and does, use the duct tape.
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post #3 of 6 (permalink) Old 06-10-2011, 05:38 PM Thread Starter
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ok

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While pulling a vacuum on the hose on the valve, you shouldn't be able to blow through the other two ports, but you should be able to blow through the ports when no vacuum is being applied.
ya when we are sucking on one end and blowing on the the other air is going through it
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post #4 of 6 (permalink) Old 06-10-2011, 05:42 PM
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While pulling a vacuum on the hose on the valve, you shouldn't be able to blow through the other two ports, but you should be able to blow through the ports when no vacuum is being applied.
ya when we are sucking on one end and blowing on the the other air is going through it
Air shouldn't be going through the ports while you're pulling a vacuum, but maybe you aren't pulling a strong enough vacuum. I believe it takes a vacuum of about 18 in of Hg. to close the valve.

Most 4-wheeler problems are caused by a loose nut connecting the handlebars and the seat!!

You only need two tools in life -- WD-40 and duct tape. If it doesn't move and should, use the WD-40. If it shouldn't move and does, use the duct tape.
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post #5 of 6 (permalink) Old 06-10-2011, 06:21 PM Thread Starter
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Quote:
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Quote:
Originally Posted by brent View Post
Quote:
Originally Posted by Helmut View Post
While pulling a vacuum on the hose on the valve, you shouldn't be able to blow through the other two ports, but you should be able to blow through the ports when no vacuum is being applied.
ya when we are sucking on one end and blowing on the the other air is going through it
Air shouldn't be going through the ports while you're pulling a vacuum, but maybe you aren't pulling a strong enough vacuum. I believe it takes a vacuum of about 18 in of Hg. to close the valve.
ya well i am sucking as hard as i can and we can blow through it so it looks like i am buying a 70.00 part
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post #6 of 6 (permalink) Old 06-10-2011, 06:25 PM
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ya when we are sucking on one end and blowing on the the other air is going through it
Air shouldn't be going through the ports while you're pulling a vacuum, but maybe you aren't pulling a strong enough vacuum. I believe it takes a vacuum of about 18 in of Hg. to close the valve.
ya well i am sucking as hard as i can and we can blow through it so it looks like i am buying a 70.00 part
I don't think the valve being bad will keep it from running or anything. The purpose of the air cut off valve is to keep the engine from popping or backfiring on quick deceleration. I would check Ebay or somewhere and try to find a used one cheaper.

Most 4-wheeler problems are caused by a loose nut connecting the handlebars and the seat!!

You only need two tools in life -- WD-40 and duct tape. If it doesn't move and should, use the WD-40. If it shouldn't move and does, use the duct tape.
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