Originally posted by Kupnu4
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Cracked exhaust manifold will make a ticking noise. Do you have a ticking noise?
Did you read the thread I posted?
A leak in the inlet, between the MAF and the engine, will allow un-metered air into the engine making it run lean, the O2 sensor will detect this and the ECU will try to add more fuel to compensate. The lean running will raise EGTs which will destroy O2 sensors quicker than normal.
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