All Santro Owners and Experts, though I have been following this forum but this is my first post.
I own a santro prime 2008, recently i noticed that there is a rhythmic vibration in the engine in a sense that engine is smooth for 4-5 seconds then vibrates irregularly for 1-2 second and then becomes smooth again, this happens on petrol and CNG both. I went to Sajjad Motors and they said that its perfectly fine and nothings needs to be done.
Not satisfied with the answer I went too Hyundai township and they said there is a problem so firstly the guy checked the plug coils by replacing them with the ones that had just to make sure but the problem remained so he concluded that the car requires a head job and will cost 8k-10k, listening to this I went WTF the car is only driven 62K and had no problem since the day I bought it new in 2008.
Not satisfied again I went to another mechanic and he said it required tappet adjustment so he did but the problem still persists and I have also changed the spark plugs just to be sure. Please help me out here pertinent to mention that the car runs fine with gud fuel consumption upto 165km in city without ac on cng.
One thing i noticed when after tappet adjustment (he set it at 8mm) that the sound of engine had increased and tappets are making tik tik noise and increases with increase in speed and mechanic guy also said that CNG zyada khuli hui hai and adjusted after that milage has greatly improved previously it used to give 130km within city without ac on CNG. He also said that authorized workshops gas zyada kholtay hain to make the ride smoother however; no need for that. Is it true, experts need ur input here.