1994 idi 7.3 no power smoking very bad
 

Ive got a 1994 7.3 has absolutely no power like hard to go down the road. Just purchased it as a project truck, it has around 300k on it. They said it ran fine til someone replaced all the return lines cause they were some leaks then the filter housing had to be replace cause it was leaking also. Theres no leaks but i found there was no hose hooked to map sensor where does the hose come from that connects to the Map sensor. Thanks in Advance