[Shotimes] 93 SHO Failed Texas State Inspection

Koll kasimonds@qwest.net
Sun, 18 Dec 2005 22:40:49 -0800


EGR systems get clogged as a matter of course.  It could be that the
activating mechanisms aren't working, but usually, it's the passage ways.

An inoperable EGR system will always cause high NOx readings, usually high
enough to fail.

  K o l l

----- Original Message ----- 
From: "Anthony del Busto" <dbusto@earthlink.net>
To: <shotimes@autox.team.net>
Sent: Sunday, December 18, 2005 5:36 PM
Subject: [Shotimes] 93 SHO Failed Texas State Inspection


> I took my 93 in for the state inpection and couldn't believe that it
failed.
> It failed the Nox(ppm) on both the high (25mph) and low (15mph) speed
> emission results.  Am I correct to assume that the engine is not burning
the
> fueling efficiently?  Back in October I replaced the original fuel pump
with
> a new 155 ltr/hr fuel pump.  Could this be the culprit?  Should I intall
> check the fuel pressure and install a fuel regulator if pressure too high?
> New wires and plugs (all Ford OEM) recently installed as well.  Please
> advise.
>
> Tony
> 93 mtx (stock)
> 122k
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