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Toyota echo/yaris emisions


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I have a toyota echo 2000 manual. And the HC emissions are too high 500 to 650 ppm. Also, the CO is high 2,5 ppm. The check light is not on. Spark plugs are brand new, new air filter, the car runs pretty well. Some times, like every three months the check light comes on for Evap code, its the only problem.

 

It is very interesting that if I unplug the hose that goes to the PCV valve I fixes the problem, and reduce the emissions to less than 35 HC, and 0.03 CO.

Not idea why unpluging this hose fixes the issue.

Do you know what is wrong with my car?

Please check the hose I unplug for better reference

Thanks

20210207_060417.jpg

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