The 360 runs a fuel vapour recycling system that can give the owners issues when filling up the petrol tank. If you have difficulty in filling the tank to the top or the pump keeps clicking off then it is possible that the fuel vapour canister has failed.
The car has a fuel separator/disareator which is a long bar running between the top of the two fuel tanks (shown in yellow in the diagram below). This collects fuel vapours when the car is not running.
The vapours are allowed to flow into a charcoal filled vapour canister (number 10 in the diagram below). When the engine is running, the ECU determines when to release the vapour into the inlet manifold in order to be burnt in the cylinders. This is performed by opening valves numbered 12 in the diagram. Valve number 11 controls the flow of vapour into the canister as there is no need to collect the vapour when fuel is being drawn from the tanks. Part number 13 is an emergency shut off valve that activates if the car overturns and prevents any fuel leakage.
Problems occur when the canister gets blocked which in turns means that the air/vapour in the tanks cannot escape. At best this means the tank cannot be filled to the top but at worst it can mean the petrol backs up the filling neck which clicks the pump off.
Here’s a picture showing the canister in situ. To access it you need to remove the rear grill/panel. See here: Rear Grill Removal
Here’s a picture of a used, but functional, canister on the workbench:
Here’s a picture showing a faulty canister immediately after removal – note the charcoal pieces falling out of the end.
And here are a series of photos showing the construction of the canister. There’s no high tech in here and the OEM price of £250 is frankly a rip off.