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  • Oil Change

  • Tune Up

  • Engine Repair

  • Computer Diagnostics

  • Air Conditioning Services

  • Brake Repair

  • Suspension Repair




  • Oil & Lubrication

  • Tune Up

  • Carburetor Rebuild

  • Fuel Injector Cleaning

  • Suspension Service

  • Electrical Systems

  • Wheels and Tires




If you are in the Livermore area and need roadside assistance, please call us at 925.446.5106 and we will be happy to assist you!



Inspection includes pictures and videos

Cannot be combined with other offers. Must show at time of service.

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Things To Know Before Passing Your Smog Test

1. Do not take your vehicle for a smog check if it does not run properly. It will probably fail the smog test and you will lose your inspection fee. Seeking help with your local auto mechanic will save you time and money.


2. Drive your vehicle for at least 20 minutes prior to getting a smog check. This will ensure your vehicle is properly warmed up and running at its optimum level.


3. The use of fuel additives can be very helpful in lowering emission levels and helping your vehicle pass the emissions inspection. Fuel additives are generally poured into a vehicle's gas tank during refueling and is mixed with your vehicle's fuel. The purpose is to clean carbon deposits within your engine's intake and exhaust paths, allowing for both fuel and air to flow freely within its passages, thus lowering emission levels, improving combustion, increasing overall engine performance, and helping you pass the emission test.


4. Make sure your vehicle's tires are properly inflated. During the smog inspection, the technician may need to drive your vehicle on a dynamometer as a part of the smog test process. Making sure your vehicle's tire pressures are correct to allow the vehicle to be driven with greater stability and accuracy during the smog test. This may be the deciding factor between failing or passing the smog test.


5. If your vehicle is close to its next oil change, do it before the smog check. The PCV (positive crank ventilation) system of your vehicle is designed to allow your engine to breath fumes located in oil compartments. The fumes are then burned through the combustion process. Your vehicle may fail the inspection if the oil in your engine is contaminated due to inadequate oil changes. 


6. Check computer for vehicle monitors that have been ran. This service requires machinery and is performed free of charge at First Street Smog.


7. Make sure your vehicle's Check Engine Light or Malfunction Indicator Lamp is off. This is an automatic smog failure. A certified auto repair shop can diagnose the check engine light condition and offer you an evaluation and estimate. 


8. Make sure your vehicle's battery has not been recently disconnected. If your vehicle recently needed a jump start or battery replacement, we recommend holding off on getting the smog check for at least one week. Whenever a vehicle's computer loses power, such as when it's battery has been disconnected or charge depleted, its internal self-test monitors are erased. Without these required Emission Monitors your vehicle cannot pass the smog test. You will be required to drive between 100-200 miles in a week in order to "complete" the emission monitors and pass the smog check.


9. Avoid rainy weather. If your vehicle is model year 1999 or older, it will be driven on a dynamometer during the smog test. When your car's tires are wet there is greater chance of slipping and losing traction as the smog technician tries to maintain required test speeds while on the dynamometer. This is not to say you can't get a passing emissions test on a rainy day. The smog machine has a "dry tires" mode, which will dry your car's, truck's, SUV's, or van's tires before the test.

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