P0303 Chevrolet -

Question

Ok I have put coil packs on my 2006 chevy impala but the engine light is still on wat do i do now.

Answer 1

HI there,

Check for an intake manifold gasket leak, swap the #3 fuel injector with the one next to it and see if the misfire code moves to the new cylinder.

Take a compression test on cylinder #3