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 Post subject: FUEL TANK pressure build up
PostPosted: Mon Jan 21, 2008 11:15 am 
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Location: North Queensland ( cairns )
I dont know if theres a problem with my fuel tank , but every time I fuel up and release the cap a hugh amount of gas releases . It is quiet and amount so Im suspecting the tank breather is not working properly, It doesnt affect the cars performance at all ,and I have never incounted this on other makes Ive own to the degree of this ,was wondering is this normal or do I have a blocked breather.thoughts :?


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PostPosted: Mon Jan 21, 2008 11:21 am 
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I get that. It's a huuuuge amount of vapour. I'm pretty sure it's normal, and by memory there's a sticker on it to warn you about it.

It's good because the fuel doesn't go stale in the tank after two weeks.

The only time I've had a problem was when I opened it while the tank was full and I got sprayed with fuel.


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PostPosted: Mon Jan 21, 2008 11:25 am 
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A little bit I understand but this hisses for a good 3 to 4 seconds.


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PostPosted: Mon Jan 21, 2008 11:36 am 
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An EFI system should pressurise the fuel tank. ;)

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PostPosted: Tue Jan 22, 2008 7:34 pm 
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I get that too...never really had any problems with it.


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PostPosted: Wed Feb 06, 2008 9:45 am 
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I get that too sounds like it's normal
Amont of back pressure seems to fluctuate according to how much fuel is in the tank

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PostPosted: Wed Feb 06, 2008 10:01 am 
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It will also fluctuate with temperature.

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PostPosted: Wed Feb 06, 2008 4:07 pm 
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Location: North Queensland ( cairns )
Put a relieve valve fuel cap on Stopped the problem. The only thing that worryed me is the plastic fuel tank expanding and contracting all the time ,I reakon long term the tank will crack .


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PostPosted: Fri Feb 08, 2008 11:30 am 
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northern exposure wrote:
Put a relieve valve fuel cap on Stopped the problem. The only thing that worryed me is the plastic fuel tank expanding and contracting all the time ,I reakon long term the tank will crack .


Nah, ther wouldn't be enough compression to cause that. But if you're worried, only fill your tank to the first click and leave some room for the gases to expand.


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