The engine light is on and reads codes po141 and po304. Ford dealership told me it was intake manifold leak. They changed oil and oil looks clean. The car is hesitating more on acceraltion it seems and the engine light has started to blink a couple of times going up hills. The estimates for intake manifold/gasket are 1000. Wondering if anyone has had similar problem and if could be easier fix, maybe just the coils? Not experienced mechanic and just trying to find helpful information before I take it to another mechanic.