4.3L V6, Emissions failure, 1986 Caprice, Parissiene

no one · 2003-11-13T05:10:06+00:00

Car went from being very clean to failing emissons in the last 20Kmiles.Two years ago, had the dealer replace the oxygen sensor, put new plugs,air filter, pcv valve and this brought it into passing. This made itpass, but it was no where near as clean as the previous test cycle. Thecatalytic converter was replaced 25K miles ago at the dealer with oemnew stuff. All the emissions stuff is connected.Car has 200k miles. Doesn't burn much oil, but does leak some oil downthe valve stems.I don't think there are any vacuum leaks.Car doesn't idle quite as nicely as it used to.What is the most likely suspect causing emissions failure on this car?Thanks

Nov 13, 2003 21 Replies

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BOB URZ 22 years ago

So, a bottle of gunk flush, five quarts of oil and a filter cost $2.00? Sign me up!

Bob

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Rich B 22 years ago

Yeah Bob, I pay for the flush but steal the oil and filter (helps make budgeting MUCH MUCH easier).

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