2003 Mazda MPV Repair Question
Mazda MPV Smoke Problem
Blue smoke is an indication of oil burning in cylinders or getting to the exhaust system which are mostly caused by worn valve seals.
It is not a failure of amy kind but rather a wear and tear problem and if the smoke is not too bad, I would live with it. Repair cost is not too cheap and just remember to check the engine oil level.
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