More fun.
Long Fuel Pressure Relief Valve/Overflow Valve Thread
Fuel pressure relief valve adjustment - PeachParts Mercedes ShopForum

Another from hunter
Fuel injection pump starvation with a good lift pump
http://www.peachparts.com/shopforum/diesel-discussion/247039-fuel-injection-pump-starvation-good-lift-pump.html


Fuel Pressure Relief/Overflow Valve good pic an stretching
http://www.peachparts.com/shopforum/diesel-discussion/356193-adjusted-fuel-bypass-spring.html

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84 300D, 82 Volvo 244Gl Diesel