I have a Honda City 2005 model. It worked great for years but since past 6 months or so, its drive is no more smooth at all and a lot of engine knocking noise too. Not as responsive on accelerator as it used to be. What I did to get it fixed:
- Tuning - tappets adjustments more than once in last three months etc
- Tried running on Hi-Octane (performance improved but certainly not up to the mark)
The workshop men say that its just bad fuel problem and nothing else. Does it mean all cars (or at least Honda Cities) in the city are facing same problem?... unrealistic. Engine knocks so much that it has become a very bad drive.
Any suggestions? What can be the reason? I asked mechanic to check fuel filter but he said these are not symptoms of a dirty fuel filter. I used to drive on CNG a year back but not any more obviously.