I have a 2000 Ford Focus diesle TD on stariong first thing in morning takes awhile cranking 10 secs finally starts but only tickover for awhilw 10 secs when revs do kick in it fine untill I try to pull away and no power use a mixture of clutch and accelerater to get going when revs are up it is fine goes like a rocket if I stop and turn of engine it will not start only after continues cranking and it will suddenly start up it did come right once after I switched air con on and off but after swithing off it went back to loss of power this method has not worked since I have changed both fuel and air filters and there is no smoke at all as if it is not getting fuel at the right time Any Ideas anybody please .