I have Auto Cuore 2006 model 12,000 Km. from the last two months i am facing swear knocking from engine. Knocking noise is just like Diesel engine and few people who just have a ride with me also noticed, please note i have done the following, so advise some thing else:
- Tunning from Toyota walton and Thokar Niaz baig.
- They checked the Ignition timing, retard it a bit.
- Cleaned/ replaced the air filter.
- Checked the spark plugs, regap them
- Checked the emission through Enercon em check in toyota walton.
Please note this knocking is on Petrol as well as on CNG.