Why my check engine goes on & how to fix it?
When I park the car for approximately 8 hrs & then start the engine the
check engine light goes on, however after the engine is heated for 1~2 min
I turn off the car & start it once more then the check engine light will be off
The sparks are newly changed, so are the engine oil
the mechanic plugged computer to the car to check the reason & he says it
is from the timing chain (engine chain) but I'm not convinced after I read
online