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Old 10-27-2012, 08:22 AM   #11
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Location: Toronto, Canada
What I Drive: 2000 Black ZX3

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Exaust seems fine. Didn't get the chance to check the O2 sensors but my mechanic brother diagnosed it and the two sensors seem to operate normally. He says that the car is no timed properly. When he diagnoses it using his OBII device, he sees the car has an ignition timing of over 30 degrees from top dead center and that's when the car is in idle (parked not moving) and he says it should be much lower than that. Anyway, he did a vacuum test too and the engine is good. Sprayed the MAF sensor cleaner stuff too and the car did feel more responsive and better at acceleration, can't say anything about the mileage yet though
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