Tips For A Smoggy Car. Smog? That’s just another name for smoke (and other air pollutants) mixed with fog. It’s really common on the major highways of course, due to the loads and loads of vehicle emissions on the highway. It can be really hazardous to the environment. You probably won’t pass the smog check if your vehicle coughs up exhaust as much as a chimney blasts out smoke. So here are some things you can do. 1. Do something about your engine light. It senses faulty oxygen levels in your engine. If your fog light is on during an inspection, you’ll automatically fail. Replace your oxygen sensor if you’ve done diagnostics on it and it isn’t working well. Replace it quickly and avoid the more expensive problems it will cause or you in a smog check.. 2. Before you do the test, drive the vehicle at highway speeds for 2 weeks. Any oil and gas residues that you have will be burned out when the catalytic converter gets hot enough.. 3. Change your oil if the need be. You can fail the smog test if you have dirty oil in your tank. Ask your mechanic to check and see if any of the hoses are cracked, broken or disconnected.. 4. Tune-up your vehicle two weeks before the test. Do maintenance on anything you need to do it on. When your mechanic disconnects your batter to do the tune-up, your vehicle’s computer is reset. Then after 2 weeks of functioning, the car goes back to running all the diagnostic tests.. 5. Inflate your tires properly. If you have any tires that are not fully inflated, they will cause your engine to have to work harder to work harder.. 6. Check the coolant and gas levels of your car. Remember, the test runs your car at high speed while your car stays stationary. That means that less air would be able to flow to the radiator to cool it down. Ensure your coolant tank is filled properly.. 7. Inspect your car before the smog check. Smoke check stations will help you figure out if you have any issues that will cause you to fail your official test.. 8. Avoid rainy days. It’s said that wet tires can slip on the dynamometer and give the testers a false reading, causing you to fail.. 9. Try a fuel additive. A clogged fuel injector may cause some cars to run lean. You can help your car pass the smog test by using a fuel additive that will help clean the small openings in the car. If you are looking for mobile vehicle services in Ottawa, battery boosting, tire changes, oil changes, or mobile car repairs then give us a call to book your mobile vehicle services today. We also repair and tune-up small engines such as lawn mowers and snow blowers. The best part is that we come to you so no more waiting in line or traveling back and forth to fix your vehicles and small engine equipment.