Question about 2009 Mazda CX-7

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Purchased used CX-7 with 55k. Read about VVT actuator issue horror stories so took dealer to have serviced before 60k powertrain warranty expired. Dealer claims that VVT issue was resolved and all pa

Service history also shows operation codes 80 MAZ & 81MAZ performed at 33k, both with the description of "Engine Perf LVL". From what I am reading about Mazda service, not sure I should trust their word that the VVT issue has already been addressed.

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This problem sounds like ablown head gasket, this would make the oil mix in with the gas and would result in discolored smoke out of the exhaust pipe.

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SOURCE: 1993 Mazda 626 sedan with 4 cylinder engine and

try theand the hold makes it stay in that gear longer making it shift at higher rpms

Posted on Dec 14, 2010

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