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failed smog on 1994 Toyota 4Runner

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
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
(1) Answer
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.