How to Lower Car Emissions & Pass Inspection

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In order to lower vehicle emissions to pass inspection, take care of maintenance items, such as spark plugs, ignition wires and fuel filters. Discover how oxygen sensors and catalytic converters can degrade over time with help from an ASE-certified master automobile technician in this free video on lowering emissions.

Part of the Video Series: Auto Repair & Maintenance
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Video Transcript

Having your car emissions tested is an noble procedure today, typically on an annual or bi-annual basis. Certainly it's something that causes people out of concern and in in, in having their vehicle pass emissions. And so advice that we can give as far as getting a vehicle to pass emissions is that you know, first off, we have to have a vehicle that's running well. So taking care of maintenance items such as tune up components like spark plugs, ignition wires and filters; such as air filters and fuel filters and PCV valve is all an important part of that. Assuming that that's okay and we have a good running vehicle and the check engine light is not on, then other possible reasons for failing emissions can have to do with things that are degraded and not necessarily bad. For instance fuel injectors as time goes on becomes a little bit clog and their spray pattern instead of spraying out in mist will kind of put out a single stream fuel which doesn't burn as well and as the mist does. Other components that can become degraded over the time are oxygen sensors and catalytic converters. In my opinion these two components are probably have the worst job in the entire automobile because they have to live in the exhaust and have a tendency to become coated with carbon as time goes passed. The oxygen sensors, sensor element is inside of this temble and it becomes coated with carbon its signal can be delayed because of that. A catalytic converter whose job is to oxidize basically on burn fuel or partially burn fuel and also to reduce oxidize of nitrogen shares the same abnormality. It can degrade its operation; it can work not quite work as well for reasons of carbon coating the actual catalyst material itself. And so that's where some components like having your fuel injection system clean or that matter using products that can clean out the system can actually go through the cylinders, through the fuel injectors cleaning out the nozzle of the fuel injector; actually helping to reduce the carbon build up inside of the catalytic converter and the carbon build up on the oxygen sensor restoring these things to close to their original operating condition and helping you to maintain low emissions which should help you pass the test.

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