I can remember the day I purchased my used 190E. Driving home I could smell fuel. Initially I was thinking EHA or related fuel leak. On inspection I found one of the plastic hose connections at the temperature controlled valve in the cylinder head for the charcoal canister vapour purge system had broken. With a new valve fitted, no more fuel smell.

__________________
107.023: 350SLC, 3-speed auto, icon gold, parchment MBtex (sold 2012 after 29 years ownership).
107.026: 500SLC, 4-speed auto, thistle green, green velour.
124.090: 300TE, 4-speed auto, arctic white, cream-beige MBtex.
201.028: 190E 2.3 Sportline, 5-speed manual, arctic white, blue leather.
201.028: 190E 2.3, 4-speed auto, blue-black, grey MBtex.
201.034: 190E 2.3-16, 5-speed manual, blue-black, black leather.