I have Alto VXR 2011 with factory fitted CNG, it has done 20,000 kms so far. Recently it has started giving a lot of blue smoke, specially when i press the accelerator hard or when going up the hill. Car has been mostly used by my father and has never been abused or anything.
I showed it to a mechanic a month back the smoke got reduced but it didn't go away completely, had the oil changed done 2 days back used Zic Hi-flow 20w-50.
Recently on highway trip to gujrat via GT road, it gave a lot of smoke at some point and at some time it gave less.
The first thing which comes to mind is that the piston rings are fried but is it possible just after 20k kms. I mean its not that it has been used for racing or anything. Daily driving distance is only 5-6kms so i can argue that may be the oil changes haven't been that regular but still.
Some expert advice would be really appreciated, is the engine gone or can it be something else.
Note: One more thing the car cannot be driven on CNG it does huge missing, on petrol it's fine no performance loss or anything. I don't know if it is related to smoke or not.
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