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Start up black smoke sounds like a subtle oil leak into one of the cylinders or onto the valves. My guess is worn valve seals. Its also possible to have a leak at the head gasket (or crack in the head somewhere) that allows low pressure return oil to slowly drip into the one of the cylinders or onto the valves. If it were a leak on the high pressure side ...


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I have a Tata Tiago and i encountered the very same problem about 6 months ago (my car was idling at around 2300 K). The guys at the service center ran all kinds of checks and diagnostics and came to the conclusion that there was something wrong with the accelerator sensor. So, they changed it. But it didn't make any difference. Finally, the electrician on ...


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