I have 2006 modal cultus. I am facing some problem and I need some one suggestion. I bought this car second hand few months back. I driven on petrol max speed upto 120KM/h. I recently repaired butterfly of carburetor. Now I want to drive this car on CNG. One mechanic told me that engine is not creating enough pressure for the CNG smooth running, so i need to change engine valves for that purpose. I am confuse about what mechanic said. I feel I have NO issue with engine, only problem with CNG setting.
