I would not use a hose under the car, not suitable for the environment. I did one in less than 1.5 hours replacing the entire line with Nylon. See #20 & 22 http://www.peachparts.com/shopforum/diesel-discussion/326447-air-bubbles-fuel.html

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85 300D turbo pristine w 157k when purchased 167,870 July 2025
83 300 D turbo 297K runs great. SOLD!
83 240D 4 spd manual- parted out then junked