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#1
08-20-2007, 04:10 PM
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Quick Q: Mercedes w123 617 fuel lines
The steel fuel lines coming from the diesel tank are stacked in the engine bay; which one is return/send?
Top = Bottom = Thanks,
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JBG 1985 TD wagon, 228k running on grease since 3.07 AUSTIN, TEXAS 
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#2
08-20-2007, 05:56 PM
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The return has the cigar hose attached, and supply has the primary filter attached.
I am thinking the return is the upper line, based on position of the cigar hose, and how the supply line runs under it to attach to the primary filter, then to the lift pump.
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RRGrassi 70's Southern Pacific #5608 Fairmont A-4 MOW car 06 VW Jetta TDI 133K miles-replaced the other '06 that quit after 300k miles. (did not catch the bad cam in time) 91 W124 300D Turbo replaced, Pressure W/G actuator installed. 195K 90 Dodge D250 5.9 Cummins/5 speed. 400K
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#3
08-20-2007, 06:19 PM
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That is correct, just spent some time figuring it out. My plumbing is pretty intense, even the guy who did it couldn't explain it (typical mech BS
 . This is due to having a customised veggie system, in case you were wondering...ty
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JBG 1985 TD wagon, 228k running on grease since 3.07 AUSTIN, TEXAS
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#4
08-20-2007, 06:20 PM
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Quote:
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83 SD 84 CD
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