Fuel hoses
Author
Discussion

Harvy500

Original Poster:

369 posts

38 months

Yesterday (21:12)
quotequote all
Took my Griffith out as it was a nice day.
Half way to my destination, the fuel needle dropped and went down steadily.
Arrived and took a look. What a mess!!
The fuel hose that runs out of the fuel filter then runs all the way to the front of the car.
It was that one that let go APPX 50mm from the jubilee clip filter outlet. To get it home it pulled the outlet of the filter, cut off the part that popped a hole and put that directly on the outlet of the fuel pump. I basically had to temporarily delete the fuel filter. Not ideal but it got my car home and it drove as it always does.
Allegedly all hoses were replaced while other work was done on my car.
The hoses are not in great condition so I'm going to get some quality ethanol safe hoses.
I'll change all I can.
As for the 2 hoses that run all the way from the back to front, mine are the same rubber hose.
Would it be worth replacing the 'long hoses' with metal pipe? Brass? Stainless steel? Copper?
Seems like my cars going to be off the road for a while.

BritishTvr450

575 posts

27 months

Yesterday (22:02)
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Ordinarily they should be copper as they run along the chassis then return to rubber just above the gearbox.

Loubaruch

1,439 posts

226 months

Yesterday (22:10)
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As Alun says they were originally copper but I found that all my fuel leaks were at copper/rubber joints so chose to completely eliminate any metal/rubber joints on the high pressure feed. The return to the tank is low pressure so copper/rubber joints are not a problem.

If you have not seen this it may help:

https://www.bertram-hill.com/replacing-the-fuel-li...

Belle427

11,811 posts

261 months

My only issue with braided stuff is you can't really see the inside, do you have any idea of the life expectancy of it?
I know ptfe stuff is available but just wondered which would be best.
I do prefer the unbroken runs but obviously will cost more, no real issue though if the hose lasts.

Rafka

109 posts

I just had the hoses on my Chim replaced by Mat Smith. Reading this I’m glad that I did.

Sardonicus

19,424 posts

249 months

Belle427 said:
My only issue with braided stuff is you can't really see the inside, do you have any idea of the life expectancy of it?
I know ptfe stuff is available but just wondered which would be best.
I do prefer the unbroken runs but obviously will cost more, no real issue though if the hose lasts.
Agreed smile a guy gave me his XK150 with a fuel leak a while back bragging it should not be the fuel hoses frown sadly it was the stainless braided hoses he purchased from a well known specialist (not cheap) were nothing more than rubber non identifiable fuel hose covered in the braid confused they had deteriorated (I cut them open) the specialist did not budge on his opinion on how great they was banghead so I fitted what I had in stock of course EFI spec TVR 8mm branded problem solved and an happy owner just a little less bling biggrin my advice branded correct spec or dont bother and no braided unless you can confirm PTFE inner but personally I wouldn't bother its really not justified

Loubaruch

1,439 posts

226 months

Yes unbranded SS fuel hose is a recipe for disaster but I bought Cohline SS hose specificaly designed for high alcohol fuels, Cohline is used OEM by Mercedes. Installed mine originally in 2015 and no problems since, not cheap but decent stuff isnt.

baconsarney

12,394 posts

189 months

Rafka said:
I just had the hoses on my Chim replaced by Mat Smith. Reading this I m glad that I did.
Same here, following an underbonnet leak… was deffo a near miss…

mk1fan

10,897 posts

253 months

I renewed the fuel hoses on Wendy (350i) and replaced all that was there with ethanol rated hoses from Car Builder Solutions. I would rather one, continuous length of line between the various elements (tank, pre-filter, pump, filter rail then return) than a load of connections / joints. Doing it on a lift was a god send.

Rafka

109 posts

baconsarney said:
Rafka said:
I just had the hoses on my Chim replaced by Mat Smith. Reading this I m glad that I did.
Same here, following an underbonnet leak was deffo a near miss
It was Mat who warned me while working on the car last year that the pipes were looking worn.