Okay so i just bought a complete set of goodyear radiator hoses (the blue set) and i got done hooking everything up and the return hose that connected from the filler cap to the mani is leaking at the filler cap/housing ..i tightened the hose clamp as much as posible and the filler housing isnt cracked or anything..any ideas?

 

If you have the stock rad with the plastic side tanks you may have a crack that is not visible. A common problem is when you remove the old hoses if you worked them off instead of cutting them off, you place stress on the plastic and you get a crack that may not show up until it is under pressure. You may have to pull off the hose and get a light and a magnifier and inspect the area around the hose fitting. Also look directly under the hose fitting on the rad, thats a common place for it to crack. It is unusual to have to tighten the clamp excessively to form a good seal.