X300 fuel pump pressure?
#1
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Could anyone tell me what the maximum fuel pump pressure would be on an X300 4.0l please. I'm looking to replace a steel fuel line from the filter to the fuel rail and I need to know if copper pipe is suitable. I believe the copper is okay up to around 1000psi. Failing that, where can I get the correct steel pipe?
#2
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#7
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In the states there is one auto parts store chain that has the long straight tubing hanging on a rack
They have bending and fittings tooling kits to barrow for free
My recommendation is to pactice the fitting fabrication on a cut off leftover piece and not the final bent replacement section
Oddly the fuel line items ( at least some ) appear to be non - metric
Someone didn't get the memo
They have bending and fittings tooling kits to barrow for free
My recommendation is to pactice the fitting fabrication on a cut off leftover piece and not the final bent replacement section
Oddly the fuel line items ( at least some ) appear to be non - metric
Someone didn't get the memo
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#8
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The US is fortunate to have a specialist for almost every application. Sadly that's not true for the UK, it's becoming increasingly difficult to source non service parts now. I wish I still worked in an engineering workshop and could make or repair just about anything myself.
It does seem bizarre that Jaguar should use imperial size tube with metric fittings.
It does seem bizarre that Jaguar should use imperial size tube with metric fittings.
#9
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Maybe a plumbing contractor at their shop would be of help but they deal with copper as a thicker wall but still would get you closer
The material may be available as a mail order
I had a GM made in Canada ( Monte Carlo ) that I assumed would be imperial so I sourced a Saab aircraft at work for a piece of hardware that I thought was imperial to be standardized for the American Airlines customer, but I was wrong.
The material may be available as a mail order
I had a GM made in Canada ( Monte Carlo ) that I assumed would be imperial so I sourced a Saab aircraft at work for a piece of hardware that I thought was imperial to be standardized for the American Airlines customer, but I was wrong.
#10
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All copper pipe here is metric. The swaged end of the pipe which fits to the filter is non standard and can't be replicated on copper. I am considering removing the damaged area and connecting with braided fuel hose and await the manufacturer's spec on the hose. Replacing the total length is a formidable task in any material.
#11
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Oil lines on aircraft were repaired by brazing incorporating a wire wrap before and after soldier applied that a plumber could do
Maybe on car if precautions taken so you would have to think through.
You can practice on a aluminum tube from a hobby store to get the picture and skill
There may be some dissimilar metal galvanic corrosion precautions.
Maybe on car if precautions taken so you would have to think through.
You can practice on a aluminum tube from a hobby store to get the picture and skill
There may be some dissimilar metal galvanic corrosion precautions.
Last edited by Parker 7; 07-12-2023 at 05:58 PM.
#12
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My background is in mechanical engineering and one of the skillsets learnt as an apprentice was forming hydraulic tube. The problem with the jaguar's fuel line is the complexity of bends in conjunction with the requirement to fit snuggly to the bodywork. The steel tube can't be formed by hand in the same way as a copper /nickel brake line. The original lines would have been formed by a cnc bender, so some form of repair section is my only option . I have no problem silver soldering the repair joint, but a suitable flexible hose would solve a few problems.
#13
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Fortunately, half the fuel lines under the car are low pressure return lines back to the fuel tank from the fuel pressure regulator up front , one of these lines is built up rubber going back aft from the FPR
For a good diagram of the fuel circuit see page 60
jagrepair.com/images/Training Guides/801S - 2000.pdf![Icon Dance Disco](https://www.jaguarforums.com/forum/images/smilies/icon_dance-disco.gif)
This return line may actually be close to zero PSI ( open fuel tank line end plus fuel tank venting errors) plus the fluidic line resistance
The pressure line at the fuel filter is the fitting on the outboard side of the fuel filter
For a good diagram of the fuel circuit see page 60
jagrepair.com/images/Training Guides/801S - 2000.pdf
![Icon Dance Disco](https://www.jaguarforums.com/forum/images/smilies/icon_dance-disco.gif)
This return line may actually be close to zero PSI ( open fuel tank line end plus fuel tank venting errors) plus the fluidic line resistance
The pressure line at the fuel filter is the fitting on the outboard side of the fuel filter
Last edited by Parker 7; 07-13-2023 at 03:09 AM.
#14
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The X308 is the same chassis as the X300 as it was more Fordized so the fuel lines may be sized diferently
Fuel Line repair advise - Jaguar Forums - Jaguar Enthusiasts Forum
Fuel Line repair advise - Jaguar Forums - Jaguar Enthusiasts Forum
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Redlock (07-14-2023)
#15
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https://www.bes.co.uk/stainless-stee...-8-x-3m-13097/
Or this one?
https://www.s-v-c.co.uk/products/159...al-copper-tube
Last edited by Jagboi64; 07-17-2023 at 06:34 PM.
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#18
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Once upon a time Jaguar classic parts supplied replacement fuel lines, correctly formed to shape. Not easy to ship ( collected from dealer) and even less easy to install. Expensive, but doable and make for a very neat outcome. Ask me how I know all of this……
patching your existing lines might be an option, as the corrosion I encountered on my UK car was highly localised to the zig zag area just before the pipes reach the end of the passenger compartment floor. Compression fittings might be an option, if you can source them.
I don’t know what the fuel pressure in the supply line is, but it will not trouble a copper or cunifer pipe, and the return line is negligible.
Mim nit a big fan of plastic pipe in higher pressure fuel lines, but Jaguar use rubber hose as the lines enter / exit the fuel rail, so it can’t be out of the question.
good luck!
patching your existing lines might be an option, as the corrosion I encountered on my UK car was highly localised to the zig zag area just before the pipes reach the end of the passenger compartment floor. Compression fittings might be an option, if you can source them.
I don’t know what the fuel pressure in the supply line is, but it will not trouble a copper or cunifer pipe, and the return line is negligible.
Mim nit a big fan of plastic pipe in higher pressure fuel lines, but Jaguar use rubber hose as the lines enter / exit the fuel rail, so it can’t be out of the question.
good luck!
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Redlock (08-14-2023)
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