05-24-2012, 09:02 PM
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#8 (permalink)
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Enthusiast Member
Join Date: Apr 2011
Location: Maryland
Posts: 498
Drives: '11 370z MB 6MT SP
Rep Power: 14
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found this:
Quote:
I check with an engineer from the factory. He explain that there is small valve overlap. There is a time when both valve are open and the vacuum created by the intake stroke can pull a small amount of the debris from the cat. The debris will damage the cylinder wall and create an excessive oil consumption.
Before any repair are done to the engine, make sure you find out what made the cat come apart. You should check for bad injector, bad air flow meter or cut wires.
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2011 Nissan 370z | 6MT | Magnetic Black | Sport Package
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