Truthfully, does anyone's vehicle that is more than a couple years old pass these tests??? I do not trust them, if we removed all the so called "environmental" equipment from our vehicles, they would get 5 to 10 MPG better milage, so, that said, how much do these so called controls really help? if we burned less gas, we would have lower emissions right?
Just more government controls forcing more spending on non essential issues.
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Today's Featured Article - Engine Valves - Some Helpful Information - by Staff. Intake - On the intake stroke the piston moves doward, sucking in carburized fuel through the open intake valve. Exhaust valve is closed. Compression - With both the intake and exhaust valves closed, the pistons upward stroke compresses or squeezes the fuel into the combustion chamber. Firing - Ignited by the spark, the compressed fuel explodes and forces the piston downward on its power stroke. Intake and exhaust valves are closed. Exhaust valves and seats are exp
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