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International Automotive Technicians Network
Re: Where Can This Oxygen Come From? - Come On iATN
Posted to Technical Theory Forum on 3/6/2001

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I'll second the intake valve theory. Just had a Corolla with compression of 200/200/200/140 in for HC & NOX failure. O2 was about 3x CO.

Had to spend $300 for the waiver so I Motorvaced the thin... Login to read more.