What emissions problem is it. Most cases it's recommended to get it fixed before it causes other failures. Most of the time check engine lights come on do to gas caps being tight or being a bad cap.
Get it fixed as soon as you can.
SOURCE: 1996 Chevy Blazer check engine light on
More then likely its the Canister Purge Solenoid. you can find it online at www.autozone.com the part number is PV140. And to replace it on blazer you have to remove the spare tire. Alot of people don't know where this part is so I hope this helps you and good luck.
SOURCE: bank 1 burning to lean check engine light on flunked state emissions
It is a common problem, you will have to change bank 1, o2 sensor as it is covered in burnt oil and fuel telling the computer to run lean.
hope this help
SOURCE: engine check light on
2002 toyota camry (4cyl) engine check light come on when I run high speed 80mph
SOURCE: check engine light emission leak
youll have to take it a shop and have them fill the system with "smoke" and examine the entire system for the "smoke". the smoke will pour out from where ever it is leaking from
SOURCE: Evaporation Emissions
On most newer car the reason the evap system light come on is because the gas cap was not closed tightly. Also do not top off when fueling because this will ruin the evap system. What the eveporative sytem does is to make sure gasoline fumes don't go into the atmosphere. It basically sucks the fume from the gastank into the engine along with the regular combustion. First make sure the gas cap is good. If it is old replace it with a new one. Close it tightly. You may have to disconnect the battery to reset the code. If the code never came back again then it is fixed.
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