Yesterday I changed air filters in my car (Nissan supper saloon N16 - model year 2000). After installation the check engine light came on when I started the engine and the engine seemed to be running with less power. Then I thought it could be a problem with new air filter so I replaced it with old one. I started and stopped engine few times and check engine lights went off.
After check engine light went off I drove few miles with less power and it recovered as I drove.
Today morning lights came back on. The engine seems to be producing less power. I suspected that oil or something from the new filter might stick on the MAF Sensor rods. I cleaned it too by blowing air but I am still having the problem.
I still have not checked for OBD readings.
What could be the problem?
Is there anything to do with MAF sensor?
update When I open the fuel tank lid it depressurized giving a vacuum sound? Does this indicate some EVAP system error?
I do not have an OBD reader and have to travel long distances to reach a automotive shop.
Is there anything I can try at home?
Error code (update) i got code p0100 so i replaced the MAF sensor but still check engine lights are on.