Hello, I have a Ford Fiesta BJ.1992! He has run 128000km and has 60hp! He runs very restless and smokes heavily black from the exhaust!It is after a short time a really black spot on ́m ground there where the exhaust was! Also it smells strongly from the back of the exhaust gas! Sometimes he also goes out in the stand!It is best to start it with gas then it goes well! It seems to me as if he is running far too fat or the fuel would not be burned properly I turned out the spark plugs once and found that they are black and also a bit wet! I checked the ignition system once and he has a spark on every cable and with each candle! So it wouldn’t be possible to have the ignition cables or spark plugs! What else can it be? Do you have an idea what I can still check without buying everything new directly?? Thanks already MFG C-KING