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Excerpt: "When we do exhaust analysis,
we are being a detective. We look at what came out of the exhaust and
figure out what could have happened before to create those emissions. What happened
in the combustion chamber, or before the combustion chamber, to create these
results?" 6 pages.
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Excerpt: "This first
set of examples shows four gas readings (HC, CO, CO2 and O2) during the two
speed idle test commonly run on the BAR 90 machine in a basic smog test area.
Some tests were only run at the low speed idle to save the catalytic converter..." 4 pages.
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Excerpt: "Let's start out with some
simple questions on 5-Gas Exhaust Analysis for review, then we'll get
into the more complex questions. Let's assume the catalytic converters on the
cars in the test are not real good, maybe only 50% efficient..."
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Excerpt: "Now for some theory on
Computer Inputs and Outputs. This is really simple once you understand
a few basic rules. Kinda like life, when you start to understand a few simple
things, it starts to work for you, but we won’t go there..." 8 pages,
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Excerpt: "Next, let's look at some
Computer Examples, to see how the inputs would combine to tell the computer
what the condition is, and we can see how they would affect the outputs. Let's
make up a sample car to do this, I call it the Theory Car..." 3 pages.
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Excerpt: "These are based on our Theory
Car as described in the Scan Tool Diagnosis Examples section.
You will notice the data is divided into frames as you would capture
and record data on your scan tool during a road test..." 11 pages.
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Excerpt: "Here we’re going to talk
about PCV, Fuel Evaporative Systems, Thermostatic Air Cleaners, Air Injection,
EGR, and Catalytic Converters. What theory do you need to know about how they
work?..." 8 pages.
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Excerpt: "PCV
valve Problems: Now this system
is so simple, what could go wrong? Well, it turns out, lots of things that cause
more problems than some people realize..." 4 pages.
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Excerpt: "Starting from simple to
more complex, have fun looking at these: ..." 6 pages.
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Excerpt: "There used to be lots of
test questions on them, but I hear there aren’t many now. Information on them
is hard to find, so maybe this will help you at work. And there are lots of
cars still running around on feedback carburetors..." 9 pages.
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Excerpt: "Now let's look at some examples
of feedback carburetor problems, to help you see how this would work. All these
examples have really existed in reality or at least as close to reality as I
can remember..." 4 pages.
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Excerpt: "1. A feedback carburetor
will most likely run in closed loop under which driving condition? ..." 4 pages.
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Excerpt: "You will need to know
Rules and Regulations for the smog test. We will cover some of them here.
Then you can take the quiz on it, and that will cover some more things I may
not review here. But looking at the answers will help you..." 18 pages.
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Excerpt: "Welcome to this test on
Smog Check Rules and Regulations.
1. The Clean Air Act says that areas that do not meet air quality standards
will:..." 16 pages.
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Excerpt: "Dyno
Testing:
What is an Enhanced Smog Check or ASM test anyway?
Remember how NOx emissions are created when the combustion temperature
gets above 2500¾F?..." 2 pages.
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