Salam
My mehran E2 2015 has been driven 22000 km uptil now. I get it tuned on regular intervals. For the last one month i am feeling that the mileage has decreased considerably. The plugs which came factory fitted are there and haven't been changed till yet, everything else like oil, oil and air filter are changed regularly. Do the plugs need to be changed at this time and how can I check whether they are ok to go or not?
Thanks
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