Morris Minor Owners Club

Hello, iv'e been working on my bosses 1966 morris minor and things have been going great, she's up and running sweetly but yesterday i noticed a small fuel leak has started from the pipe nut / copper pipe. its not from the threads it's from the pipe nut hole. How does this system work, is there a compression olive?


Thanks in advance,


Goosed

'Pipe nut hole '....... where????

As it's fuel, it's got to be either the tank end or the pump end...

There is no compression olive, just a nipple soldered on the end of the pipe and secured into the housing using the nut. Possible problems: cracked pipe, dirty union preventing proper seating, nut not done up tight enough. Just unscrew the nut and have a look.

If you do -beware in case the whole lot crumbles/collapses in your hands. Probably best to have the tank pretty much empty -and no naked lights/hot lamps in the area......

How did i forget to mention it was at the tank end?

No compression ring, thank you for that.

the car sat for months with very little fuel in it wich of course is perfect for rust to form (the fuel pump filter is clean), i will drain the tank and have a look and take it from there, a new fuel line could be an answer though fitting it without a pit / lift will be problematic.

Cheers once again

Give everything a good soak with rust release before attempting this - it's an area where I would NOT advise applying heat......

Cheers bmcecosse, i agree petrol is something to be very wary of and treated with the upmost respect.

Very unusual for that nut to work loose, so I'm verging towards a fractured pipe, but that is also very unusual. Apart from loads of plus gas (other releasing agents are available) make sure that the era is clean (wire brush etc) before undoing the nut. The tank does not need to be too empty as the outer pipe joins to an inner one that itself goes to the bottom of the tank so that the pump always draws from the bottom. If the fuel came straight out of the top of the tank, you would never be able to use more than about a gallon.

simmitc wrote:Very unusual for that nut to work loose, so I'm verging towards a fractured pipe, but that is also very unusual. Apart from loads of plus gas (other releasing agents are available) make sure that the era is clean (wire brush etc) before undoing the nut. The tank does not need to be too empty as the outer pipe joins to an inner one that itself goes to the bottom of the tank so that the pump always draws from the bottom. If the fuel came straight out of the top of the tank, you would never be able to use more than about a gallon.

Cheers Simmitc, i'll post again after working on it at the weekend

The fact that it is copper means that it not original and has been replaced, which is not uncommon. That means it may not have been fitted correctly. Interestingly copper fuel pipes are not legal in many countries as they are not considered safe! Here we have little alternative! (from the main suppliers)