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Re: Ideas on Failed Emissions
Sure sounds like it's running rich. How do the plugs look? If one
plug looks more carbon fouled than the others you could have a bad
plug, ignition wire or distributor cap. I presume the engine
temperature is normal and not running cold as an open themostat could
cause the coolant to be cold enough to keep the mixture rich. Good
luck. Al
nfirtaps wrote:[color=blue]
> Owner of (92 4WD Toyo Pickup 3.0L V6).
>
> I just failed emissions and am trying to make my truck pass myself.
> I have incredibly high CO and moderately high HC. Low NO.
>
> I have done the following things:
>
> 1.) Pulled the oxygen sensor and tested it according to :
>
> [url]http://www.unofficialbmw.com/all/engine/all_o2sensor.html[/url]
>
> ... It passed. Also I have no check engine light with it connected.
>
> 2.) Verified no massive vacuum problems.
> 3.) Banged against my catalytic converter and heard no rattling.
>
> What are some other things I should try?
>
> Thanks,
> Lloyd[/color]
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