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I have an 2002 ET4 and need to replace the petcock. Can anyone tell me how to do this please?
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Simple.
Disconnect the vacuum and fuel hose, unbolt the old one, drain the gas, and tighten the clamp when new one is positioned in place. Reconnect the hoses, fill it up and you are ready to go. |
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All of these tips are good.
There is one more way to drain the gas out of the tank before removing the valve, assuming this is a vacuum operated fuel valve. This method can be used if you don't have a siphon hose. Remove both hoses from the fuel valve. One of the hoses is to deliver fuel to the carburetor, the other is a vacuum line to the intake manifold. If this is a vacuum operated fuel valve there will only be a small amount of fuel in the hose that delivers fuel to the carburetor. As soon as you remove the fuel line from the fuel valve point it down at a bucket to catch the fuel that is in the line. At this point there should be no fuel coming from the fuel tank itself, unless the fuel valve has failed in the open position. Then hold the bucket under the fuel valve and suck on the vacuum inlet on the fuel valve. This will simulate engine vacuum and the fuel valve should open up to allow any fuel in the tank to drain into your bucket. You may need to find a spare piece of hose to hook up to the vacuum inlet on the fuel valve, making it easier to use your mouth to create a vacuum. Once the flow of fuel has started from the gas tank, stop sucking and put your finger over the end of the hose you are sucking on, that will hold the vacuum and keep the fuel valve open. Once the gas tank is dry you can then replace the fuel valve and reconnect the hoses. This would be the perfect time to replace both the fuel hose and the vacuum hose if they are cracked or damaged in any way. CAVEAT: If the diaphragm in the fuel valve has a hole in it there could be gas on the vacuum side of the fuel valve so don't suck on it with your mouth until you are sure there is no gas coming from the vacuum inlet on the fuel valve. If you aren't sure, instead of sucking with your mouth you can tape the end of a shop vac hose to the fuel valve vacuum inlet to create suction. Good luck. |
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scootchilla wrote: Instead of doing all that sucking, why not just run the engine to create a vacuum? |
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tmfinch wrote: It only takes a second or two of sucking to start and maintain the flow, just like you would have to do with a siphon hose. Had to disconnect carb to remove the fuel line from it, was stuck. Found a YouTube tip using pliers to grip and rotate stuck line. Now if I can only wrangle the air intake hose off... There wasn't a hose clamp/Jubilee clip on fuel line at the carb. Should there be? can't hurt? |
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mc2 wrote: tmfinch wrote: It only takes a second or two of sucking to start and maintain the flow, just like you would have to do with a siphon hose. Had to disconnect carb to remove the fuel line from it, was stuck. Found a YouTube tip using pliers to grip and rotate stuck line. Now if I can only wrangle the air intake hose off... There wasn't a hose clamp/Jubilee clip on fuel line at the carb. Should there be? can't hurt? If you are removing any hoses from the fuel valve, be careful to support the fuel valve with one hand while removing the hoses. The connection of the fuel valve to the gas tank is kind of fragile and if you twist on the fuel valve too much you could cause a leak in the area where the fuel valve joins the bottom of the gas tank. I speak from experience! |
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