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Date:         Sat, 3 Jun 2023 13:47:24 -0700
Reply-To:     Todd Last <rubatoguy@COMCAST.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Todd Last <rubatoguy@COMCAST.NET>
Subject:      Re: 1991 Vanagon 2.1L auto: failed DE emission test: CO (high)
Comments: To: Karl Ploessl <karl.ploessl@GMAIL.COM>
In-Reply-To:  <CAHrsyzwBLKW4EDJsGyztXGpj9GL=OzyS8FPJ2EYEMdY06Y-eOw@mail.gmail.com>
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    Could be a bad o2 sensor or cat no longer working.<br>
    Also check for vacuum leaks that may be causing your mixture to be
    too rich.<br>
    <br>
    Todd<br>
    <br>
    <div class="moz-cite-prefix">On 5/31/2023 2:41 PM, Karl Ploessl
      wrote:<br>
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cite="mid:CAHrsyzwBLKW4EDJsGyztXGpj9GL=OzyS8FPJ2EYEMdY06Y-eOw@mail.gmail.com">
      <pre class="moz-quote-pre" wrap="">here are the numbers:


low high


HC (ppm)


readings 145 88


limit 220 220


result PASS PASS




CO (%)


readings 3.39 2.48


limit 1.20 1.20


result FAIL FAIL




CO (%) + CO2 (%)


readings7.49 13.24




RPM reading


readings 935 2580


limit 500 2200


result PASS PASS




The alignments of the table is somewhat screwed up but it failed CO
emission at low and at high RPMs (935 and 2580). What would be the reason?




Karl '81 Westy "Jenny"


'91 Westy "Jenny 2" Wilmington, DE
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