Separate names with a comma.
Did you find separate tubes from EGR inside intake manifold? Separate from the place that air comes from air filter? I cleaned my intake manifold...
Is your car still running right? Has P0304 not returned after cleaning air intake manifold? I’m having similar problem. I’ve done all this: -new...
Wait, isn’t 1,3,4,2 the firing order? I’m pretty sure the cylinder numbers standing in front of car from left to right is 1,2,3,4