 Could someone quickly tell me which hose goes where? I know one is a return, and one to the engine... but whats the other one go to? As I was investigating my incorrect fuel gauge readings i took out the fuel pump to check the floater. This required me to remove those hoses and put them back. The hose on the top left of that photo was kind of worn (what does that line do?!) and I believe after that it may have been causing my rough idle which i didnt experience before. It's either that or the 91 costco gas i put in I think... Also I didn't know about the air release plug until now after reading the manual. I changed the coolant not knowing that flushed it with water and everything. Seemed fine but was wondering if its necessary to turn that air release plug when .
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the 3 fuel pump hoses and air release plug (radiator) - 
