CO2 Emissions tips

8 comments

1. Well it depends on what the reason for the increased emissions are.

   But one of the most common is catalytic converter being too cold. You can “fix” that issue by driving on the motorway for 20 minutes, possibly on one too low a gear and then heading straight for the checkup when the car is still hot as shit.

2. Warm up your engine and especially the exhaust pipe well before going again

3. I was taking the car to mechanics and asking to pass inspection. They billed according to that. Did you warm up your engine enough before the inspection? High rev in low gear also helps.

4. You can also do emission tests at some mechanics, and they can also try to diagnose the fault and fix it.

5. Lambda value is passable, as are HC PPM, CO2 has no official limit. So the problem is CO, Carbon Monoxide, which should be 0,1 or less (now 0,31). As the car is fairly new (well, in Finland it is) you should take it to a garage for diagnostics and adjustment. They can print out the results required to pass inspection after fixing the problem.

6. Rev it properly for 30 mins. Drive on 1 or 2 gears too low. Every now and then go close to redline. That usually clears it up.

7. You can change motor oil few days before test. Result will be better with fresh oil.

8. Put a wet rag in the tailpipe and try again, usually works.

Comments are closed.