YotaTech Forums - Failed emissions

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- - Failed emissions (https://www.yotatech.com/forums/f116/failed-emissions-195524/)

Gsull

10-30-2009 08:44 AM

Failed emissions

Hello I have a 94 4runner v6 and it failed the hydracarbon emission test. Does anyone know what could cause this. I replaced the 02 sensor, pcv valve, cap rotor, wires. Any info would be greatly appreciated.

txhal9000

10-30-2009 08:59 AM

catalytic converter?

abecedarian

10-30-2009 09:36 AM

Spark plugs, timing, leaking injector(s)...

Can you post the actual test results, both at idle and at speed?

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