JokerUK

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Full Member
Hi folks,
Finally got the time to pursue the misfire on the RR Sport 4.2 S/C
I was pursuing what I thought was an injector problem but on removing the S/C - taking of the throttle body lower elbow was a B**tard!
I found that some fool and actually trapped the rubber hose that links the two fuel rails under the supercharger and crushed it.

A assume some fuel must have got through but the pipe is hugely mangled!

I will take the rail and injectors off as I've got so far and I test the injectors using the mark 1 eyeball spray pattern test..

But more seriously is finding a replacement for the crushed rubber hose that links the rails. I've looked on a few sites including the LR classic parts one and the rubber pipe is never sold separately its only with both rails and injectors attached for £1300+!!!

As you can probably see its kind of U-shaped as it runs out of one rail down under the S/C and back out and into the second.

Now presumably the rubber pipe *could" be replaced but given it's shape I'm at a bit of a loss - There is of course a pair of rails on ebay - that some one has cut the rubber pipe to sell them separately otherwise I may have grabbed that.

So does anyone know if I might be able to find the rubber pipe separately? ...and If I do what the prescribed attachment method might be - it looks to be push/shrunk fit

or any other ideas?
 

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Hi folks,
Finally got the time to pursue the misfire on the RR Sport 4.2 S/C
I was pursuing what I thought was an injector problem but on removing the S/C - taking of the throttle body lower elbow was a B**tard!
I found that some fool and actually trapped the rubber hose that links the two fuel rails under the supercharger and crushed it.

A assume some fuel must have got through but the pipe is hugely mangled!

I will take the rail and injectors off as I've got so far and I test the injectors using the mark 1 eyeball spray pattern test..

But more seriously is finding a replacement for the crushed rubber hose that links the rails. I've looked on a few sites including the LR classic parts one and the rubber pipe is never sold separately its only with both rails and injectors attached for £1300+!!!

As you can probably see its kind of U-shaped as it runs out of one rail down under the S/C and back out and into the second.

Now presumably the rubber pipe *could" be replaced but given it's shape I'm at a bit of a loss - There is of course a pair of rails on ebay - that some one has cut the rubber pipe to sell them separately otherwise I may have grabbed that.

So does anyone know if I might be able to find the rubber pipe separately? ...and If I do what the prescribed attachment method might be - it looks to be push/shrunk fit

or any other ideas?
Although I have found a couple of Jag ebay items for XJR and XKR 4.2 which look OK https://www.ebay.co.uk/itm/19591432...7oZHC5mI4ELKzgYzVT5TW8qYw=|tkp:Bk9SR566n_n3Yg
 
Is there any reason why you could not run a new bit in front of the coolant pipe and not as the original one that way an ordinary straight bit of pipe would work.
 
Is there any reason why you could not run a new bit in front of the coolant pipe and not as the original one that way an ordinary straight bit of pipe would work.
Thanks for the response- normally the supercharger snout will be in that space which I guess is why they route it the way they do
 
You can just run new pipe don't worry about the shape.
Once it's all back together try a smoke test misfires are common on these engines......Ben there got the T shirt.
Good luck
 
You can just run new pipe don't worry about the shape.
Once it's all back together try a smoke test misfires are common on these engines......Ben there got the T shirt.
Good luck
Yes thanks for the reply, I started with a smoke test which yielded nothing.
i’m actually wondering if some custom shaped metal fuel line might be the answer with vibration protection and rubber ends to join the rail
 
Yes thanks for the reply, I started with a smoke test which yielded nothing.
i’m actually wondering if some custom shaped metal fuel line might be the answer with vibration protection and rubber ends to join the rail
Metal pipe would be the way I would go, bend up some CUNIC with some securely crimped rubber ends.
 

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