All R107 SL's have had this type of problem since early times! There is an expansion tank for fuel vapors mounted above the fuel tank. The early ones were plastic & later steel. All of them leak!!

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MERCEDES BENZ MASTER GUILD TECHNICIAN
ASE MASTER TECHNICIAN
27 YEARS M.B. TECH




[This message has been edited by M.B.DOC (edited 07-08-1999).]