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Survey: How long does a Cat last? 200

My '81 has a similar noise. I thought it was pinging. I tried reducing timming to 6 degs (spec is 8 +/- 2) and going to 92 octane. No effect. One thing different than the usual pinging is the sound does not get louder if more throttle is added. I have the original cat at 290k miles but it has always passed CA smog well within limits.






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New Survey: How long does a Cat last? [200]
posted by  Swedespeed240  on Fri Jan 27 08:08 CST 2006 >


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