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It depends on what is causing the high Co. It could be anything from dirty engine oil to and O2 censor. You need to find out what it is and fix it.

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15y ago

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What causes high CO readings in auto emissions test results?

High CO is a rich air/fuel mixture. Nothing else.


Can a vehicle run without a charcoal canister?

yes but it might not pass emissions depending on where you live


What Causes High CO in an emissions test?

Could be your catalystic converter messing up.


What causes co emissions to be high?

High CO emissions are typically caused by incomplete combustion of fuel due to engine issues such as a dirty air filter, malfunctioning fuel injectors, or a faulty oxygen sensor. Other factors can include using low-quality fuel or excessive idling. Regular maintenance and proper driving habits can help keep CO emissions low.


Can you remove a catylitic converter?

Yes you can, but if you don't replace it with another one such as a Magna Flow or a High Flow Cat, you won't pass emissions If You don't care to pass emissions then go ahead. Don't forget to make it look like you have one or you can get a ticket.


How do I lower my co2 to pass emissions?

To lower CO2 emissions and pass emissions testing, you can try driving at a steady pace, ensuring your vehicle is properly maintained and tuned, using high-quality fuel, and reducing idling time. Additionally, consider using ethanol-free gasoline and maintaining proper tire pressure.


Can you pass emissions test with engine light on?

No


Why are Nissan skylines iligeal?

They emit high emissions that didn't pass U.S. standards and they can by tuned to go faster than lambos and ferrrari's


In NJ can you pass inspection with the check engine light on?

If NJ has an emissions standard, no. You'll have to repair whatever is wrong before the vehicle will pass emissions.


Do you need your catalytic converter on your S10?

To pass emissions you do.


What do you do if you cannot get your car to pass emissions test?

Get it fixed.


How do you pass high co emissions 02 accord?

Check for a blowing exhaust this can put your co up. If not you could try putting a fuel threatment into the car and drive it really hard just before you go into the test. If it still fails after that you should go to someone with a diagnostic computer. This will tell if oxygen sensor codes are stored in the car and the data display will show if the cat is working.