Fuel breather leaking fuel ?!

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Fuel breather leaking fuel ?!

Postby XSVWGN » Sun Nov 28, 2010 12:24 pm

So i have had my wagon running recently and took it for a drive only to find that it was putting fuel out the one way valve on the breather line from the fuel tank (Where charcoal canister used to be)

I put a empty coke bottle on the line yesterday and after 10minutes of driving there was about 500-600mls of fuel in the bottle


I have made sure that the return line etc is correct too. When ideling the one way valve doesnt leak fuel... its only when the car has been driving.

Car hasnt been running for about 4years so maybe something is in the breather line? bugs etc ...


Thoughts?




Matt

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Postby RomanV » Sun Nov 28, 2010 12:32 pm

Is your fuel tank noisy when the fuel return line is going?

Is it possible that you've got the fuel return line going to the pipe on the tank that's supposed to be for the breather, and vice versa?

As I think the breather one comes out inside the top of the tank, and the return in the bottom.

So if you had your breather line connected to the return pipe, if the tank pressurised it would push fuel up your breather line instead of vapour. As the pipe end is in the bottom(ish) of the tank.
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Postby XSVWGN » Sun Nov 28, 2010 2:15 pm

Fuel return pipe is right next to the feed and the breather if in the top of the take but over the other side. I have gone through the haynes manuals and i have it all plumbed correctly and i checked it also against my 4agze ae100 sedan ..

not sure whats going on ...



Matt
tt132 Corona wagon. 2jzgte project
ae100 wagon 4agte 358kw monster - SOLD
2008 Kia rio - work car
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Postby allencr » Sun Nov 28, 2010 4:55 pm

If it was located on the top of the tank it couldn't get fuel in it unless the tank is very full, is it?

Put some compressed air into the line & listen at the filler, hissing = OK, bubbling = not OK.
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