OIL / FUEL LINE UNDER INJECTION PUMP ???

[Sehka77]

Hi , I have 1990 mack rd model with e6 -300 engine I have a line possible oil or fuel under fuel injection pump its hard to see where it goes to or what it's for any help would be appreciated it ?? Runs under the injection not sure  If it goes to pump or block?? 

 

Frist picture is injection pump right under is branded line leaks oil that line runs to  back of (  oil pump )??? second picture 

I can't tell where that Branded line goes to etheir back of pump or block behind pump? 

Edited February 5, 2021 by Sehka77

[terry]

Could be water, from bottom of water pump to compressor.   terry

[Sehka77]

I don't think so ,it's leaking a bit so its looks black like oil.. just not sure where it goes to hard to see under injection or runs behind it some where etheir to pump or block ??

[Sehka77]

12 hours ago, terry said:

Could be water, from bottom of water pump to compressor.   terry

I added pictures so you get a better idea any help would be appreciated thanks