Nothing like a great tune up, to make the Dodge Purr..
----- Original Message -----
From: Grady Ogburn <jgo@nospamplease.uswest.net>
To: <dakota-truck-moderator@bent.twistedbits.net>
Sent: Tuesday, October 08, 2002 10:00 AM
Subject: DML: Help passing emissions... (PASSED!)
>
> On Tue, 01 Oct 2002 13:25:14 -0400, Grady Ogburn said...
>
> > I just failed emissions miserably, for CO levels. The engine was
> > fully warmed up when the test was run (Colorado Emissions test, if
> > that matters).
>
> Thanks to all who responded.
>
> > 1. Burn a tank of gas with FI cleaner (Chevron)
> > 2. Clean TB and all sensors
> > 3. Clean & re-oil K&N
> > 4. Burn a little bit of H2O, using the SpeedTweaks "dixie cup" method
>
> Additionally, I changed the oil and filter a little early (2.5k miles,
> Redline 10w30 and Wix), put a new distributor cap and rotor (brass)
> on, and replaced the plugs (Autolite 3923s, .040").
>
> > Will these actions contribute to a better CO level? At 29k miles
> > (most at altitude, running ethanol-oxygenated gas), should I replace
> > the O2 sensor? Any other suggestions?
>
> Bottom line, I went from CO levels at ~6 times the legal limit to
> passing. Goes to show that routine maintenance is important.
>
> Also, I made the mistake of going back to factory spec Champions about
> 10k miles ago on the recommendation of the "Master Mechanic" at my
> dealer. Back to Autolites now.
>
> I live in a pretty dusty area, so I think that the K&N cleaning had a
> pretty significant effect -- I'll do that more often.
>
> The contacts inside the distributor cap were pretty severely encrusted
> after ~14k miles; that probably reduced the spark enough to make a
> difference.
>
> --
> Grady Ogburn (Denver, AIM: JGradyO)
> Black '98 Sport CC 4x4 5.2l, 5 Speed, 3.55 LSD
> K&N GenII, MP TB, JET II, MSD 6A, Magnecor 8.5 Wires
> Mesa Headers & Cat, Gibson/MagnaFlow 3" Exhaust
> Leer Topper
>
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