Fuel pipe from pump to rail on 806

Use a good thread lock,and yes u can do it up a bit more but be careful.

Hi, thanks for the replies. Can`t rule out the rail but replacing the pipe cured it, albiet for a short time. I`ve tightened the union nut, a little (not as much as said here) and it`s cured it again. I appreciate that pressures are high and the union nut shouldn`t work loose... I`d also noticed, as had the Green Flag man , that the actual length of the nut up against the rail on the old pipe was touching and thus at max turns and so no more turns were possible...this wasn`t true at the other end (pump end)..plenty off travel left.....anyway...it`s "cured" for now so I`ll keep my eye on it...or nose!!!!! Hate plumbing too!!!

Hi, thanks for the replies. Can`t rule out the rail but replacing the pipe cured it, albiet for a short time. I`ve tightened the union nut, a little (not as much as said here) and it`s cured it again. I appreciate that pressures are high and the union nut shouldn`t work loose... I`d also noticed, as had the Green Flag man , that the actual length of the nut up against the rail on the old pipe was touching and thus at max turns and so no more turns were possible...this wasn`t true at the other end (pump end)..plenty off travel left.....anyway...it`s "cured" for now so I`ll keep my eye on it...or nose!!!!! Hate plumbing too!!! If the nut is "bottoming" on the thread, then it might be that you are unable to tighten it enough. In which case it should be possible to take the pipe off, and carefully file the nut edge to allow more clearance.

Update..a few months have now passed and after taking the car to a garage to look at, the leak was sorted for a while. However, it has now started to leak AGAIN!! I`m at my wits end as to what to do. I`m going to buy another pipe (they`re cheap enough) and fit it. But why is it doing this?Is it a known fault? Is there any other solution to this? Weld it on? Pump end union is fine and always has been. Could it be the rail?...it has been checked....if need be, I`m going to buy a new one (bit more expensive I guess!). Is it worth paying Peugeot to fit the new pipe and put the onus on them to sort it??Please, any help or solution to this would be very much appreciated..it`s driving me NUTS!!!

Update..a few months have now passed and after taking the car to a garage to look at, the leak was sorted for a while. However, it has now started to leak AGAIN!! I`m at my wits end as to what to do. I`m going to buy another pipe (they`re cheap enough) and fit it. But why is it doing this?Is it a known fault? Is there any other solution to this? Weld it on? Pump end union is fine and always has been. Could it be the rail?...it has been checked....if need be, I`m going to buy a new one (bit more expensive I guess!). Is it worth paying Peugeot to fit the new pipe and put the onus on them to sort it??Please, any help or solution to this would be very much appreciated..it`s driving me NUTS!!! At this point in time it might be worth talking to your local Peugeot Stealer.