Just a quick note to let you all know that the fuel injection has been cleaned by my Renault mechanic and my 19 seems to go smoother a bit now. Doesnt seem to have increaed any power but they were overdue to be done anyway.
I dont think the previous owner ever did anything to the car. It also had a faulty temperature sensor that was causing some major running issues but it has been replaced and now all is ok with the car.
There are fuel-additives to clean your injectors too. I have used them and they do work, driving will be a bit smoother, and engines are running idle better with it. For as far my experience goes ...
Menno they did clean them in an ultrasonic bath actually. I didnt see it happen but it is really quite simple my mechanic told me. The hardest part was removing all the injectors on the f3n engine..