[MarquisGT]

My car has been hesitating very bad during acceleration, and almost stalling when cold. I had the EGR valve replaced, and the shop told me that the ports were so clogged that the intake manifold would have to be removed to clean them properly. I'm going to be doing that part myself, but I need to know the best way to clean them thoroughly before I get into it. What is the most effective way to do it? Thanks...