failed smog on 1994 Toyota 4Runner

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

by in Verdi, NV on December 21, 2009
1 answer
ANSWER by on December 21, 2009
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.
Related Items: knocking, no pinging, no reason to think there is a problem other than the failed smog test! Many thanks for your help! J
Our Toyota 4runner failed the smog test. They told us we needed a new catalytic converter. Before the test it ran great, after the new catalytic converter it ran great. This was last week, today...

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