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Default 12th May 2018, 09:41 PM

Hi, welcome to tM. Was it a short drive to your test centre? Before looking at anything mechanical, its good practice to take car for a 30 minute high speed run before the test. It’s also advisable to fill up with higher premium fuel which contains cleaning agents or add fuel treatment (Carclean). Mechanically, the 02 sensors is usually replaced first before looking at the components you mention.


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