Date:         Mon, 11 Sep 2006 19:43:33 -0400
Reply-To:     Dennis Haynes <dhaynes@OPTONLINE.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Dennis Haynes <dhaynes@OPTONLINE.NET>
Subject:      Re: Failed emissions
Comments: To: Kim Brennan <kimbrennan@MAC.COM>
In-Reply-To:  <C757BBBB-3596-4AE2-B1FD-69F63BCBAD61@mac.com>
Content-type: text/plain; charset=us-ascii

Kim,
The CO at .53% tells me the mixture is right on the money but the catalyst
is shot. No reduction of either CO or HC. The HC being a bit high should be
expected for a 200K mile + engine. A combination of blow-by or tired valves
or unbalanced injectors is working against you. You are close so some
adjustments may help. Try new plugs, cap and rotor, and maybe retard the
timing a little. This will give more air for a given unloaded engine speed
that might clean it up enough to pass.

Dennis


-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
Kim Brennan
Sent: Monday, September 11, 2006 4:21 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Failed emissions

Okay, my newly acquired Vanagon (stock 2.1) failed emissions.


            IDLE                     2500
HC     53                         241       (limit 125)
CO% 0.18                     0.53      (limit 1.0)

So, HC is too high at speed. Engine runs fine (with lots of power.)

I had to replace the muffler (which was rotted and rusty and falling
to pieces. I pulled the old muffler and cat off the engine that used
to be in my Tristar (which had passed emissions without problems.)

What is the thought here? Tune up? Change the air filter? The HC at
idle seems high to me (though it is within limits).

Note, I'm trying to do the minimum as this engine will be pulled in
the near future and replaced with a subaru....but I have to get it
through emissions NOW so that I can get the registration taken care of.