Saturday, April 12, 2014
Tips on Passing Smog Tests
Smog or emissions checks are tests used to measure the amount of pollutants emitted by vehicles in an effort to improve air quality. Depending on the state, these tests may be mandatory on an annual or bi-annual basis. In other states no emissions testing is necessary. Drivers who are aware of how to prepare their vehicles can improve their chances of passing.
Heed Warning Signs
Pay attention to how the car is driving. If it seems as if it isnt running smoothly or if it is consuming large amounts of gas, take it to a mechanic to see if there are any repairs needed. Pay attention to any illuminated indicators on the dashboard, such as the "Check Engine" light for example. If these warning indicators are lit up, take the car to the dealer or mechanic to have the underlying situation resolved as in some states such as California, a "Check Engine" light will immediately result in a failed smog check.
Change Oil
If it is due for an oil change or past due, have it taken care of before having the test. Fumes from old and dirty oil can result in a failed smog check. Have fuel and air filters replaced when the oil is changed as this may also increase emissions.
Warm it Up
On the day of the smog check, fill the car up with the grade of gas that is recommended in the vehicles manual. Take the car for a ride that lasts at least 20 minutes to bring it to normal running temperatures. This ensures that the oxygen sensors and catalytic converter are hot enough to be properly functioning when tested.
Fuel Additives
Use fuel additives when gassing up the car. These can help clean the engines intake and exhaust paths of carbon deposits. This helps air to flow freely and assists in lowering your cars emission levels, according to SmogTips.com.
Check Tires and Lighten Load
Certain types of smog checks are done on a dynamometer. If this is used during your test your tires must be properly inflated and match the size that is specified in the original car specs. Tires that are overinflated or underinflated or sized overly large or small may have a negative affect on passing the test as the machine is calibrated to original size. Remove any excess items that may increase the weight of the car and also make it more difficult to pass.
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