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| Engineering/ Technical Ask technical questions about cars. Do you know how a car engine works? |
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#1
06-25-2005, 10:34 PM
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Too much CO%!
I'll admit that I know nothing about 70's emissions equipment, so that's why I need some opinions. My 1979 Dode Colt failed emissions - it passed every test with flying colors - except for CO% at idle. CO% at speed was well within the boundaries though.
What could it be?
__________________
 Support America's dependence on foreign oil - drive an SUV! "At Ford, job number one is quality. Job number two is making your car explode." - Norm McDonald. If you find my signature offensive - feel free to get a sense of humor. 
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#2
06-26-2005, 01:42 AM
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Re: Too much CO%!
can you post all numbers and engine size?
long story short, high COs normally means you are rich,
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#3
06-26-2005, 04:09 PM
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Re: Too much CO%!
It smells rich. But the hydrocarbon readings are low, so I was perplexed. I don't have the numbers with me unfortunately. These cars don't have a catalyst either, so I suppose I'll take a look at the carb and the air injection system and see what's amiss.
__________________
Support America's dependence on foreign oil - drive an SUV! "At Ford, job number one is quality. Job number two is making your car explode." - Norm McDonald. If you find my signature offensive - feel free to get a sense of humor.
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#4
06-26-2005, 10:58 PM
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Re: Too much CO%!
My guess is an EGR valve is sticking open at the wrong times, or its spring has failed letting it open too soon.
__________________
Dragging people kicking and screaming into the enlightenment.
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