88 vert; Bonez Cat; failed emissions
07-10-02, 09:14 PM
#1
Junior Member
Thread Starter
88 vert; Bonez Cat; failed emissions
Can anyone tell me what the life expectancy of a bonez high-flow cat is? I' ve had mine for about 4 years and have used the atf trick a few times.
I just failed my emissons test for NO.
I just failed my emissons test for NO.
07-11-02, 10:42 PM
#3
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Yes it would be interesting to know what all the results of your test were and also the test protocol in Atlanta(is it an idle test or or a load test on a dyno?).
It is very unusual,in my experience,for an RX-7 to fail NO test.If it was during an idle test there maybe a simple solution,but if it was on a load test then your cat may be NFG.
It is very unusual,in my experience,for an RX-7 to fail NO test.If it was during an idle test there maybe a simple solution,but if it was on a load test then your cat may be NFG.
07-17-02, 04:58 PM
#5
Junior Member
Thread Starter
Thanks for the response. I've been out of town for a few days. Ok, yes my air pump is connected correctly. As for a tune-up, I just changed the plugs but the plug wires (magnecore 10mm) are about 2 years old. are the The test in Atlanta is a 50/15 Load Test, here are the emmissions results:
HC-ppm: Reading- 164; Allowable- 180: Pass
CO-%: Reading- 0.03; Allowable- 1.01: Pass
NO-ppm: Reading-2104; Allowable- 1378: Fail
RPM: Reading- 1687; Allowable-1500-3000: Pass
CO + CO2-%: Reading- 0.1; Allowable; 6.0 min: Pass
My car by the way is running great better than ever actually. I thought I had blown an apex seal about two months ago because it started running like ****. But after about another month it just stopped running bad and started running great. Could that have been a sign of the Cat going bad?
HC-ppm: Reading- 164; Allowable- 180: Pass
CO-%: Reading- 0.03; Allowable- 1.01: Pass
NO-ppm: Reading-2104; Allowable- 1378: Fail
RPM: Reading- 1687; Allowable-1500-3000: Pass
CO + CO2-%: Reading- 0.1; Allowable; 6.0 min: Pass
My car by the way is running great better than ever actually. I thought I had blown an apex seal about two months ago because it started running like ****. But after about another month it just stopped running bad and started running great. Could that have been a sign of the Cat going bad?
07-17-02, 05:10 PM
#6
Opinions are like........
It could be the catalyst...
Test the EGR. Check your timing. Replace the o2 sensor if more than 50k miles of use. Check all vacuum lines/hoses.
Your HC barely passed.
Get a fuel injection cleaning--preferably in car. This will also clean carbon out of the engine.
Save all your receipts. Around here, if you exceed a certain $$$ amount, they give you a 1-year amnesty and you would have to spend that $$$ amount again next year. I hope that you have that option.
I would think that the $350 catalyst would be the last and most expensive thing to be replaced.
https://www.rx7club.com/forum/showth...threadid=86143
Your HC barely passed.
Get a fuel injection cleaning--preferably in car. This will also clean carbon out of the engine.
Save all your receipts. Around here, if you exceed a certain $$$ amount, they give you a 1-year amnesty and you would have to spend that $$$ amount again next year. I hope that you have that option.
I would think that the $350 catalyst would be the last and most expensive thing to be replaced.
https://www.rx7club.com/forum/showth...threadid=86143
Last edited by deadRX7Conv; 07-17-02 at 05:14 PM.
07-17-02, 05:49 PM
#7
Former Moderator. RIP Icemark.
I agree with dead, it sounds more like a mixture problem than a cat, yes you are on the end of the cats life as well.
Most aftermarket performance cats seem to only last about 5 years on a RX-7. I am sure there are exceptions, but they are rare.
Most aftermarket performance cats seem to only last about 5 years on a RX-7. I am sure there are exceptions, but they are rare.