Ok wife went out in my car 99 1.8 focus , phoned me saying not running right like it's out of petrol, has 1/2 a tank , rung again saying broke down.

Went to her aid, car starts but you have to rev the nuts out of it and even then it aint revving correctly, anything other than foot to the fllor and it splutters etc, and even when foot to the floor it is defo being held back.

Any ideas please.

Jason