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Fuel Tank pressurizing WHY!!!!!

Tech Talk for Nissan owners.

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Fuel Tank pressurizing WHY!!!!!

Post by ORSM4B »

Hi guys since owning my GQ 4.2 petrol wagon l have only now filled my petrol tank full since going for a trip, when l noticed that fuel was filling up the carbon canister in the engine bay contantly, so pulled to hose off and blocked it and then the tank still was building pressure so had to drive around with the fuel cap just sitting in the filler.

Can someone tell me what this problem would be and how to fix it.....

Cheers Chris
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Post by Sterlo »

Mate

Not too up with the GQ's but there should be a check valve in the breather line somewhere.. Most likely aroun the top of the tank some where.. It sgould only let vapor past not liquid.. if this is the prob, u will also need to replace the charcole canister as the fuel would have wrecked it..
Hope this helps

Sterlo
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Post by ORSM4B »

Thanks mate but the breather has a rubber hose which is then plummed into factory piping to the canister.....
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Post by CWBYUP »

I take it that its a LWb Wagon ?

Drivers side rear wheel arch, inside that there is a cover over the fuel pipes.

Remove cover and clean fuel tank breather valve.

It has a clear plastic cover

Nick
[quote="Vulcanised"]more grunt than a row of drunk girls at a B&S ball!
[/quote]
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Joined: Thu Oct 19, 2006 8:03 pm
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Post by ORSM4B »

Thanks mate will look at it tomorrow, does anybody have pic of a standard tank as l think it has a after market tank as the GQ LWB is on Gas...

Cheers Chris
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Post by frby69 »

SurfChris wrote:Thanks mate will look at it tomorrow, does anybody have pic of a standard tank as l think it has a after market tank as the GQ LWB is on Gas...

Cheers Chris
i have gas and longrange tank will take copuple pics in morning for u
cheers tim
http://photobucket.com/frby69
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Posts: 253
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Post by ORSM4B »

thanks mate that will help as l think mine is a long rangie too.....
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Post by frby69 »

hi bloody raining but did get under and look on mine the valve is just on the inside of chassi infront of the coil and above the sway bar bracket it has a hose comming from tank to it then other hose goes up to canister under bonnet

Image
Image
Image

this is where they cable tied mine so if you look around that filter looking thing is what your looking for cheers tim
http://photobucket.com/frby69
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Posts: 253
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Location: Melb

Post by ORSM4B »

Sweet thanks mate....

Cheers Chris
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