Fuel needle bounced up rapidly at start-up

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GiveMeABreak
(Donor 2016)
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Re: Fuel needle bounced up rapidly at start-up

Unread post by GiveMeABreak »

Regarding Vapour recovery systems...

Have a read of this although they are repealing their use in the US, the UK is keeping them - so they must be here and in use..

https://forecourttrader.co.uk/news/arch ... overy.html

Relevant Extract:
However such a move in the UK is highly unlikely, according to Jamie Thompson, chairman of the technical committee of the Association for Petroleum & Explosives Administration.

Legislation currently requires UK sites selling more than 3.5mlpa to have vapour recovery systems, and a second European Directive will encompass sites selling smaller volumes by the end of 2018.

Thompson said the crucial difference between the US and the UK was the use of carbon cannisters in the fuel tanks of cars in the US. These devices soak up any vapour rendering US stage II Vapour Recovery Systems redundant.

However, there is no such requirement for the fuel tanks of cars in the UK, and even if there were, said Thompson, it would take many years before they were widespread enough to make stage II Vapour Recovery Systems redundant.

He said: “The cost of vapour recovery has to be borne either by the petrol station owners or by the car manufacturers, and in the UK it is the petrol station owners who pay.”
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Marc
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GiveMeABreak
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Re: Fuel needle bounced up rapidly at start-up

Unread post by GiveMeABreak »

Just on a related matter concerning 'brimming' the tank.

For those of us with particle filters, the additive is metered out according to the quantity of fuel added to the tank. The tank is FULL when it clicks at the first or second click.
If one regularly brims the tank by trickling in fuel to the top of the filler neck, then the Cerine quantity injected is not going to be at the right ratios for the amount of fuel in the tank so this may be another reason to consider. :)
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Marc
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Paul-R
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Re: Fuel needle bounced up rapidly at start-up

Unread post by Paul-R »

I have considered this and don't see how that would make an appreciable difference to the amount of Eolys injected.

An extra litre of fuel (and that's probably being optimistic) in the 70 odd litre tank of an X7 is only about 1.5% extra. And, as the fuel gauge doesn't show any difference for the last five litres or so, is surely irrelevant.
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9000se
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Re: Fuel needle bounced up rapidly at start-up

Unread post by 9000se »

Back on topic, and thanks - I never fill up to max anyway (too cheap, and always looking for cheaper fuel on a journey)...the needle seem to be on the "right level" now, have only done about 30 miles, so it's possible that the needle has not moved (no experience of this car in particular, but older cars I have, their needles don't move at the beginning but move very quickly towards the last quarter of a tank).
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