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1994 Toyota 4Runner Question: failed smog



swedishgrl, 3.0L V6, Verdi, NV, December 21, 2009, 04:13

my trucjk failed the smog ck,,it says"Failed ignition timing"..how expensive is this to correct or do i need to have a certified mechanic to fix it/..plz help me with the answer..thankyou

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  • Answer #1

    December 21, 2009, 14:04

    There is an adjustment for the ignition timing, and if this not within the specification noted by the manufacturer, you will fail the smog check. On the 3.0L V6 (3VZ-FE engine) the specification is 10 degrees BTDC. If you look on the printout, it should note the actual reading they measured.
    You are best taking this to a shop that is a licensed smog test and repair shop.

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