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The mkiv Supra Owners Club

Fuel hose warning


Chris Wilson

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Just gone to move a race car and I thought it was out of fuel until I saw several gallons of fuel at rail pressure had pumped onto the floor from a leaking Aeroquip braided hose. Hose is only 2 years old, nitrile lined. Aeroquip say the fuel companies are adding E85 to all unleaded pump fuels and it's rotting the nitrile liners. I will have to replace it with Teflon lined, which, at -8 diameter is very inflexible and will need re routing. Big fire risk, if you use braided nitrile lined hose you should change it!!

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I just Googled this and it seems it's far from unknown. Maybe older stock lines were a different material to current stuff. I am told the black Kevlar or whatever braided stuff has not, so far, succumbed to this. Luckily this is just on my Skyline, the other race cars are all Teflon lined, as far as I remember. It has also sat for months with fuel in the lines.

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Luckily I have Teflon lines right throughout my track car now.

I used to have Black Kevlar lines on the old fuel tank, they were on the old tank for a good few years and never leaked.

 

I am sure you have the tools needed to build new teflon lines but if you need anything let me know as I ended up purchasing the kit in order to do it all on mine.

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http://nora.ie/biofuels-obligation-scheme.141.html

 

Interesting: In Ireland The obligation was increased from the 1st January, 2013 from 4.166% Ethanol mix to 6.383% via the BOIS scheme(Biofuel Obligation Scheme )

 

The key word there is "obligation".

 

The BOS Scheme places an obligation on suppliers of mineral oil to ensure that 6.383% (by volume) of the motor fuels (generally Gasoline and Motor Diesel) they place on the market in Ireland is produced from renewable sources, e.g. Ethanol and Biodiesel. The obligation was increased from the 1st January, 2013. It was previously 4.166%

 

 

Nice read: http://en.wikipedia.org/wiki/Common_ethanol_fuel_mixtures

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  • 2 months later...

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