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Re: OE spark plug and O2/AFR lookup
Posted to Shop Management Forum on 12/22/2023 2 Replies

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Very common back then,mostly on the 5VZ-FE 6 cylinder engines in the Tacoma,4Runner,and Tundra. I have never heard anything other than conjecture and rumor about why it was done,but it happened for y... Login to read more.

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