when i got this car from my brother, the engine light is on... so i changed air fillter and change oil, then engine light went away...i've been using the car for about 2 weeks, then i changed spark plugs because i have to get it smoged....after 5 days engine light is on again...can someone help me?

You Can Go To Auto Zone And They Will Check It For Free

The check engine light comes on for many reasons.. one that is common is that you didnt tighten the knob of the gas tank when you filled up gas.. that could make the check engine light come on!!! If its not that then just go to Midas, they are great and do the job well and cheap!