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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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| | | | Joined: Feb 2007 Posts: 230 Shop Shark | | Shop Shark Joined: Feb 2007 Posts: 230 | Does an O2 sensor measure actual oxygen in the exhaust mixture, or does it measure heat, assuming that the more oxygen means more heat. Reason for asking: on initial start-up, the engine blew a lot of raw oil out of the exhausts which seeped in apparently from an open valve cover. Every thing works ok now after warm up. Did the O2 sensor get clogged or damaged ? | | |
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