Re: Help, please-failed emissions

Mark Pilcher wrote:
> 
> 1986 S-10, 2.8 V-6, Automatic, Holley 400 CFM TBI, Edelbrock TES, MSD coil,
> Accel cap. rotor, wires, Bosch plugs, 3-wire o2 sensor, Maremont cat (a little
> over 2 yrs old). Failed due to Nox. High speed results were 2457 standard, 2915
> current reading. Low speed was 2638 standard, 3552 current reading. Any ideas
> would be appreciated, as Cristmas is coming and I'm not too flush with cash.
> Thank you in advance, Mark.
> Sally sells sea shells by the sea shore because rough men stand ready to
> do violence on her behalf.


Hi NOx usually means bad EGR and/or overly advanced timing. With all
the aftermarket stuff on your car it's hard to tell.

JazzMan
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