Problemas com minha Ford Fiesta

Good my problem is the following I have a 2002 Ford Fiesta and the next fault is the car I turn to it fine but when I start the car for that that has no strength like when a spark plug is burned that has no force but the engine does not tremble or anything I have to accelerate it enough so that it can grab strength and when it accelerates it quite a lot sounds like an explosion or a pus in the acceleration body where I will have the butterfly Spark plug cable coils

Como está a compactação do motor

Tcheca o catalisador poderia ser obstruído

NAFTA ou filtro de ar coberto ... Se a nafta estiver coberta, perde energia, porque não fornece o suficiente ... e o ar com oxigênio sujo coberto e faz como se se afogue ..

Olá, o que ficou intrigado no final?