My 2005 corsa lite is over flueling, what can i do?

is the fan motor itself worn out
resistor ?
Noisy High Speed Radiator Fan Switch Repair Vauxhall Opel Temperature Fan...

Hi maybe check if there isnt a vacuum pipe off or damaged near the intake manifold

found this on earlier post

Cylinder head torque specs for opel corsa 8valve 1 4l 2005 model

about 45 ft lbs.

Possible coil/module bad. Just because you have spark does not mean it is being sent at the right time or with full voltage.

Throttle position sensor, probably on foot pedal

Front right lower side is the crank sensor ,in line with the crankshaft ,could be this playing up although i have had many problems with this type of engine ,one problem is the computer bolted to the engine ,seem to suffer heat fatigue ,another problem i cannot explain is it just will not start and for this i fit a crank sensor from the earlier version with the toothed front pulley and support then cut the wires from the crank sensor and run them to the one at the front of the engine but they are polarised on the wires so if it doesnt start reverse the wires to the crank sensor ,Now no doubt iam wrong as ever but i do think that the crank becomes magnatised and its affecting the sensor so by moving it to the front pulley it eliminates this problem .

The spark plug firing order for Corsa lite 1.4 is 1 - 3 - 4 - 2.

I had the same problem with my Corsa Lite Sport. Try turning the ignition key slightly counter-clockwise when you hear the clicking.