The DV's generally leak fuel as they are under pressure. Where you leak occurs is under suction, drawing fuel up from the tank.

Look for a bad seal (is only 1) or connection from the small line plugging into the fuel thermo and back to the tank strainer.

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Terry Allison
N. Calif. & Boca Chica, Panama

09' E320 Bluetec 77k (USA)
09' Hyundai Santa Fe Diesel 48k (S.A.)