Question about 1978 Chevrolet Caprice
My readings where" loaded reading 2.01 and loaded standard was 1.50 also my idle reading was 3.91 and idle standard was 2.00
Try have the idle mixture adjusted leaner, also it is very possible the catalytic converter is worn out, if it has over 100,000 miles it is most likely the problem. One trick I use is to change the oil before the test and get the exhaust as hot as possible jusr before the test.
Posted on May 30, 2009
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Posted on Jan 02, 2017
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