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Does Mazda DISI need refinement?
This car has 87K miles. This is the third head of this style that I've worked on. All of them had this excessive carbon build-up in the intake ports and on the valve stems. It's fuel, not oil, and the seals and guides are good. This engine uses 8 long intake ... Login to read more.
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| Engine | 2.3 L |
| Trans | 6-speed Automatic (Electronic) |
Vehicle Data
2007 Mazda CX-7 Grand Touring 2.3L
| Engine | 2.3 L |
| Trans | 6-speed Automatic (Electronic) |
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