The circular can behind the Rt side tire well in the trunk is a vapor
seperator canister. It is part of the evaporative loss system. It is
possible for fuel to be in the hose from the tank to the vapor canister
itself. If the hose breaks in this area it could leak some fuel into your
trunk.
If you over fill your tank and do some hard acelerating and your filler
gasket is bad the gas can also slosh out into your trunk. MG tanks have
short filler necks and it is possible to overfill a tank. Modern vehicles
have filler necks which serve as a buffer for sloshing and are usually a
foot long or more. AN MG filler is more like 6 inches or less. Also if
your car has some rust on it you may have holes in the top of the tank.
What type of fuel pump do you have? An SU Pump has a pressure cut off and
it will stop when it gets to a preset PSI. An after market pump may or may
not (it is OK for them to just keep pumping as they have a release valve
inside). It is not unusual to not see fuel at the carb hose unless it is
under pressure (the system is on) as it is the highest point of the system
and gravity pulls the fuel back to the tank. Ever notice that the pump
clicks a bunch when you first turn the ignition key and than stops? It is
priming the system. Although that epends on your fuel pump too.
Good luck.
Drew
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