155 1.7 TS 8v missing power
I have 155 1.7 TS 8v which i've owned since 2011. It has never been a very fast car, but for me it was always acceptable. However, lately it feels like it's missing some power. I runs smooth, no hicups or so, but even at 100 km/h in 4th gear with full throttle, it won't accelerate as quickly as it used to. I've had no problem with driving it with a crusing speed of 150-160 km/h, but right now it takes ages to reach that speed.
I know it is a little vague, but I hope there is someone here who is able to help me with my problem.