lack off power rover zr

[gaffer2006]

have got a rover zr 2003 1.4 it has a big drop in power when driveing have changed plugs/coils/throttle positon switch and still no diffrent just like lack off fuel or no spark any ideas would be hlepful thanks

[Toureman]

It is always a waste of money to renew things that might be the problem, get a garage to tell you what is wrong and then buy and fit the part that s needed.