After changing starter, fuel filter, and plugs, the car starts very hards. Sound is metallic and rough. Started right away after starter, and fuel filter. Didn't let it run long. Changed plugs and then had problem. Checked connections and they seem ok. Once it runs, it sounds and feels good. Used nkg plugs as recommended, and they are gapped properly. Cleaned out the air intake system, the plastic parts, as they were utterly filthy, so I am worried I got water into the engine. The parts dried overnight and seemed dry on install. Someone said to unhook the fuel management. System so it resets? Help!