BenzWorld Senior Member
Date registered: Jun 2010
Mentioned: 0 Post(s)
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Don't run dirty fuel thru your system. Your tank needs to be dropped and cleaned. My 67 250se sat for 7 years. Then the po tried to run it, ruining the whole fuel system. my fuel pump, I.P., and injectors needed attention. my fuel lines were ok. If you need to start it, drain the old fuel from the system, change fuel filters and use an auxillary tank. If it has been sitting 20 years you may want to put some wd-40 or similar in the spark plug holes, to help free stuck rings.
To replace my fuel system cost thousands, So please don't run old gas thru and drain/blow as much out as possible