My car has been running smoothly, but my check engine light keeps popping on with an EGR Insufficient Flow reading. Without doing much research I just went ahead and replaced my EGR valve on my own only to have the light come on again after about 40 miles. I've been looking around online and some people suggest taking about the intake manifold and manually cleaning the carbon out of it. Will this solve my problem? Is there any easier solution that I'm missing? I have to have my car inspected in NC by next week so I have to get this done quickly, please help!!