I recently for a 96' Tacoma 2.7L 4 Cylinder with AEM intake giving me check engine light - code said it is running lean. It stated shortly after the intake was installed.
I am somewhat new to mechanics and any help on trouble shooting this issue would be greatly appreciated. I must get the smog done within 10 days and need to figure this out.
The truck does have a small crack on the top of the exhaust manifold but did pass smog with it in OCT. and never threw a check engine light because of this.
Again, any help on where to start would be great.