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Could a loose roller rocker cause a low o2 code??

This is a discussion on Could a loose roller rocker cause a low o2 code?? within the General Help forums, part of the LSx Technical Help Section category; Ever since I had my crane 1.82s installed I ha a slightly louder ticking from the drivers side engine. Lately ...

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    Could a loose roller rocker cause a low o2 code??

    Ever since I had my crane 1.82s installed I ha a slightly louder ticking from the drivers side engine. Lately I've been getting a low o2 voltage from drivers side code.

    Is it possible that a loose rocker could cause this or a collapsed lifter?

    Would it make sense to crawl under and switch the o2s from header collectors left to right to rule out the sensor is bad?

    I have an exhaust shoppe I'm going to go to tomorrow morning to rule out exhaust leaks.

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    None Shall Pass Knight's Avatar
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    I would suspect either a bad O2, or faulty wiring. Swapping the O2s would be the easiest way to check. I've never heard of a bad rocker affecting O2s.

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    Yeah was just a thought since the Car ran perfect before the rocker/spring/pushrod upgrade. Afterwards when I heard ticking I started to think one was loose and when codes started popping I wondered if a rocker being loose could cause the code.

    I'll try swapping the o2s.

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    Quote Originally Posted by Knight View Post
    I would suspect either a bad O2, or faulty wiring. Swapping the O2s would be the easiest way to check. I've never heard of a bad rocker affecting O2s.
    I was kind of thinking if the rocker backed off it wouldn't be opening the valve much or at all explaining the ticking but thenagain the ticking is slight and a valve not opening would make the 02 read rich and ECM would pull fuel. I'm having the opposite.

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