Both filler hoses on my 1990 3.9 Plus 8 are cracked and leak badly when re-fuelling. This could be due to age (or Ethanol deterioration?). The filler caps are lockable, lozenge-shaped and chromium-plated.
I have bought some new 51mm rubber hose from
Hose Supplier. This hose is reinforced with a spiral spring bound into the hose construction.
It has proved impossible to install the new hoses because they are difficult to bend whilst aligning the ends with the filler neck and the fuel tank tube. I have considered removing the filler cap and neck and was surprised not to find a large (around 2 inch diameter) hexagonal fixing nut on the underside of the rear panel. Instead, I can feel only a plain, circular metal boss. Maybe these are unscrewed using a strap-wrench? I have checked everywhere for a clear photograph or drawing but have found nothing.
At this stage I would really appreciate advice from someone older and wiser:
1. How can a new stiff fuel filler hose be installed with the fuel tank and filler necks remaining in place?
2. If the filler necks should be removed first, how is this achieved?
