kminty

Hello I have a v reg 1999 ford galaxy zetec 1.9 tdi. I bought it with what the dealer called turbo seal problems, but im not so sure. When you first start it up you get white smoke coming out of the exhaust and you get that until the car is warmed up then it drops down to every now and then, also with this problem is lack of power coming from the car, max speed on a straight be lucky to hit 50-60 but up hill drops right down and no power boost from 1st or 2nd gear. Does anyone have any idea what the problem could be, any help would be great. Cheers Kirt