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Running

Test the charging system and starter draw

In this test, a charging and starting system analyzer is connected to the alternator and battery. With the engine running, the output and regulation of the charging system is checked with the meters. The condition of the starter is tested while the engine is cranked for 10 to 15 seconds. This test shows how many [...]

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Test the exhaust emissions

The vehicle may also be connected to an exhaust-gas-analyzer by inserting a probe into the tailpipe. With the car running in Neutral, the mechanic can check the amount of carbon monoxide (CO) and hydrocarbons (HC) in the exhaust (other emissions can be tested with more sophisticated analyzers, but these two reveal a great deal). He [...]

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The Walk-around Inspection

You’ll find the oil filler cap somewhere on the valve cover. If the engine is a longitudinally-installed V6 or V8 the cap could be on either valve cover, if the engine is a transverse installation, the oil filler cap will always be on the front valve cover. Some oil filler caps on older vehicles have [...]

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