Re: 2000 and something focus power issue
Mr blah blah blah,
Be sure to verify that all your fluids are properly filled. You can get a fuel pressure test done before worrying about replacing things, although as Bert mentioned a fuel filter is part of the regular maintenance. Knowingly with 120K kms it hasn't been done yet and should be. If that's the case, a tune up (new plugs, air filter check etc) should be on your list as well.
If you buy a car with NO MAINTENANCE HISTORY, get ALL THE FLUIDS changed and when in doubt about service, get it up to date. A vehicle is only as good as it's regular maintenance. Sellers can lie. They might tell you that everything is up to date, when in fact it WAS up to date 40,000kms ago. If the previous owner took the car into a small shop instead of the dealer for work, the shop probably used lesser copper core plugs which are only good for about 40-60,000kms, not 100,000kms like it says in the owners manual.
I know it's too late now, but when buying used you can negotiate the price down to replace some things (trans fluid, oil change, tune up) if the owner cannot prove or does not know if or when it was done last.
'00 Durango R/T 360ci 290hp (modded); 138,500m
'06 Pontiac G6 GT 3.5L 220hp; 44,000m
'12 Chrysler 200 Limited 3.6L 283hp; 13,000m
'99 Taurus 3.0L 2V Vulcan 145hp; 154,300m - Traded
Amsoil in all vehicles!