fuel tank problem

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ektor
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Joined: 02 Nov 2012, 18:05

fuel tank problem

Post by ektor » 11 Nov 2012, 10:01

If the fuel tank gets air inside is there any problem? if there is no air how much vacumm should be? thank you

citronut
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Re: fuel tank problem

Post by citronut » 11 Nov 2012, 10:36

firstly what car/model is this,

the answer to your question is usualy no, as you can usually run an engine with the cap of,
if you do find/hear pressure escaping as you open the cap the breather/vent is probably blocked

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spider
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Re: fuel tank problem

Post by spider » 11 Nov 2012, 12:34

I'd agree. Later petrol engines do not vent to the air (not sure about diesels actually as they don't really evaporate fuel in the same way, then again...) they have a carbon cannister arrangement.

But there should not be a mad vacuum when you release the filler cap in any case, as Malcolm has said if that happens you probably have a blocked or kinked breather pipe, easily done on some models if you've been around the tank area / had the tank out etc.

We need to know what car / year / model it is really.

ektor
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Joined: 02 Nov 2012, 18:05

Re: fuel tank problem

Post by ektor » 11 Nov 2012, 18:06

I have peugeot 206 1.9 diesel year 1999.thank you

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spider
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Re: fuel tank problem

Post by spider » 12 Nov 2012, 11:11

Its probably a blocked breather pipe around the tank / filler neck area then. It will be a smallish pipe.