Volvo D3 more what is this #2

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tranmkp

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Fluid Motion Model
C-28
e4ff7839471cd761337322caa4d06184.jpg
From top of engine - cover removed. This is looking down at injector - looking at the rubber tube(s) the look worn - what are their function?


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Fuel hose to injectors
 
Yes the metal pipe but the little hose is soft and squishy - it could never hold the pressure - seems like a vent system ?


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That is the fuel leak off line. It is the return fuel line from the injector. Low pressure.
 
Ahh, yes I see - is there a service schedule for these??
 
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