Hi to everyone, my Fiesta was still running quite normal until then. Then all of a sudden he only ran on three cylinders. Then I turned out the candles and they glowed. ECHT! The engine block was close to it. What do I do now? Do I have a machine damage? Is the exhaust system clogged or what? It also leaks oil from the cylinder head seal. Is the shingle broken? Why why? I have such a Kent machine in it that ratts! Who knows a guess. Would be very grateful to you!