Regarding the leaks. On my Peugeot 104, is that knob underneath the gas tank a shut-off valve? Or are you talking about putting an additional valve on the fuel line.
My Peugeot drips when parked. It may drip when running, though that's not noticeable. Can this be fixed by cleaning out the carborator?
After I wrecked my other Peugeot today by setting it on fire (unless I can find some parts), I don't want to take any chances.