Fuel line size? - MG-Rover.org Forums
 
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post #1 of 11 (permalink) Old 14-10-2016, 22:33 Thread Starter
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Fuel line size?

Hi,
Bit of a techy question, should anyone be able to help. There looks to be some corrosion on the main fuel line pipe that runs from the tank to the engine. How crucial is it to replace the pipe with a new pipe of exactly the same internal bore? I assume it is important to ensure the correct volumetric flow from the pump to the engine? Would small differences make any difference? As much as I have searched, no one sells the fuel line anymore, so may need it replaced using a fabricated line.
Would anyone know the specs of the pipe? E.g. id/od?
Thanks!
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post #2 of 11 (permalink) Old 15-10-2016, 21:08 Thread Starter
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Pic of the corrosion on the pipe, roughly circled in yellow.

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post #3 of 11 (permalink) Old 15-10-2016, 21:08
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It shouldn't be too hard to fabricate your own lines using the correct bore pipe and a micro bore pipe bender.
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post #4 of 11 (permalink) Old 15-10-2016, 21:19 Thread Starter
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Yes, esp for someone who knows what they are doing! Hopefully they can tell what the bore is and not fit something which is either too small or wide. I assume a short section can be cut out and replaced rather than the whole length of the car!

A couple of inches to the top of the picture, and the pipe connects to a rubber pipe which I presume connects to the fuel pump. The pipe is corroded pretty much all the way to the plastic connector between the metal pipe and the rubber pipe.

Anyone know if the plastic connector is reusable, or is it integral to the metal pipe and not reusable?
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post #5 of 11 (permalink) Old 15-10-2016, 21:25 Thread Starter
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Pic of the plastic connector, circled (!!) in blue.

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post #6 of 11 (permalink) Old 16-10-2016, 08:37
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Sorry, I didn't realise it would have "ends", shows how much experience I have of fuel lines, I was using my brake and coolant line experience.

Might be worth asking someone like pirtek.
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post #7 of 11 (permalink) Old 16-10-2016, 14:50 Thread Starter
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Thanks for the reply. Having gone back to the diagram at Rimmer Bros, the flexible pipe has the plastic connector, so I hope the metal fuel pipe only needs a rolled end. Once I get it to my friendly garage, we should hopefully know more.
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post #8 of 11 (permalink) Old 16-10-2016, 20:39
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Having recently done a similar job You have two options.

1. Remake pipe exactly as it is and somehow re-use the connector

2. Remake the pipe a bit longer and then fit it directly into the rubber pipe with suitable clips

I chose the latter because the connector on mine simply wasn't going to be re-usable.

20160625_142716 by E_T_V, on Flickr
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post #9 of 11 (permalink) Old 19-05-2017, 11:20
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rover 618 petrol steel fuel pipe

Hi. I'm trying to source a steel fuel pipe which is located at the rear of the vehicle near the rear wheel. It was leaking and a local garage did a temporary fix. The pipe although not fully leaking, it is 'sweating'. I have tried all of the usual outlets who say that the part is no longer available.
I am waiting for a few breakers yards to get back to me.
In the worst case scenario, if i am unable to source one, could someone point me in the right direction of which pipe I can use to custom make one as shown in the image earlier on this thread.
Will I need a steel pipe? the dimensions etc.
I would appreciate any links to the item.
Kind Regards.
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post #10 of 11 (permalink) Old 20-05-2017, 19:37
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You don't necessarily need to use metal pipe. I assume the line that is leaking is the fuel delivery pipe, which is pressurised? They do tend to corrode where they sit behind the plastic cover - the cover protects them from damage caused by debris flying from the tyres, but keeps them damp in the winter (and covered in salt too, which isn't easily washed from behind there).

I had a similar leak due to corrosion on a 620 - I cut out the badly corroded section and fitted a length of rubber injector hose (clamped with two hose clamps at each end). It served well until the car had to be scrapped 3 years later due to underbody corrosion around the front and rear subframe mounting areas it was a rather scruffy car when I got it, and wasn't worth spending time and money repairing any more )
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post #11 of 11 (permalink) Old 21-05-2017, 12:31
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Hi and thanks for the reply. that is exactly what the local garage did i.e. cut out the bad bit and replaced with a rubber hose. Unfortunately, the rest of the metal pipe is quite bad and is 'sweating' petrol up to the rubber hose that leads to the fuel pump. There is still quite a strong smell of petrol, therefore, I am looking at replacing the metal pipe.
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