Datsun Roadster Forum-311s.org

I would appreciate help from the experience and knowledge of the forum. I have a 1969 2000 that has been running quite well until recently developing a spraying fuel leak above the carburetors. In the attached photo, gas is spraying from the joint to the right of the rubber hose marked with red arrows. The joint circled in blue ink to the left of the hose is not leaking at all. That joint is shown in the second picture.

My questions are:
It appears that this is a soldered joint from the looks of the joint on the left. Is that the case or is it a compression joint or other type of connection?
Do you have any experience or recommendations as to the repair or replacement of this connection?

Thank you for any help or suggestions.

David/linwelddlk

My experience is with Mikuni Solex carbs, but those look like banjo fuel line fittings, with copper (or sometimes fiber) washers that seal them on each side. Either the attachment bolt on the cylinder head/inboard side of the red circled fitting has backed off, or a washer has failed on the carb/outboard side.

The problem is a very common one and the solution is exactly as rwmann describes. Simply renew the aluminium washers on both sides of the banjos and tighten securely.

You could, if you wish, renew the hoses while you are at it, and lightly surface both sides of the banjos with 2000 grit paper on a piece of glass to ensure flatness. Also a good time to make sure those screen filters inside the banjos are clean and in good order.

After a few miles, watch for discolouration around the banjos which would indicate a slight leak.

Jon

Thank you very much rwmann and jhayden for the advice. I will report back on progress.

I pulled the assembly apart and cleaned the washers and the bolt. Filter seemed ok but see attached pic.

Engine started and is not leaking. Thank you!