I pulled codes and got code 33 on KOER. I found my EGR and there was no hose on it at all. Ok I bought a hose that fits it right but my question is. The vacuum routing shows the EGR connects to the EVP. On the diagram it shows the EVP near the front of the truck. I looked and all I see is a vacuum hose going to a vacuum reservoir. Is that where I could connect the hose to? Or where would the EVP might be? Truck is a 1990 4.9L F150