4.7. General information about cleaning and repair of the fuel tank
Any repair of the fuel tank and jellied mouth has to be carried out by the professional having experience in such critical and potentially dangerous work. Even after cleaning and washing of fuel system explosive couples can remain and during repair of a tank to ignite.
If the fuel tank is removed from the car, then it it is necessary to arrange in the zone inaccessible for sparks or naked flame which can ignite vapors which are coming out a tank. Be especially careful in garages where the equipment on natural gas as the match can cause explosion is located.