SEAT TOLEDO 2.0I 1991 TIRONS PROBLEM

Good to everyone, see if someone can help me. I have previously acquired a toledo 2.0i GLX of 1991 with 93000km real certified with each ITV. The car always starts the first one, but when you accelerate sticks and the engine trembles something in rementi and it does it until the 3000 laps later, oil does not spend, the car was 6 months It still does not give some flashing pulls someone knows where to look at a greeting