You require a toolkit which consists of the following:-
1) Screwdriver
2)Hammer
3)Condom
4)Scrubbing brush
Then you follow this procedure:-
1)Fix it, if you can't
2)Hit it,if you can't
3)F**k it and if you can't f**k it
4)Scrub round it :lol:
Do you have a silver braided flexi-hose just below boiler? Open little (normally black in colour) tap until you achieve 1.0 bar pressure, disconnect hose on completion.