There are 2 hoses to the vacuum port,EGR,L/valve cover.It's black and round. There's a big hole in the back of it,is there a hose or plug that's supposed to go there?Can't find anything loose or diagram of area.Hard to get to.
Q&AAsk Your Question
2003 Ford F-150
Question: had error codes 171-174,found large vacuum leak behind engine at top.
Answer #1Greg's Orange Auto (8341 Answers) , Orange, CA - (714) 361-9355globalhelper February 08, 2013, 06:25Master
sounds like it would be the pcv hose that goes from pcv valve to rear port of intake manifold.ck with your ford dealer at see if the part looks right as far as size goes.
Replyrunningboard, February 08, 2013, 15:41Rookie
Thank You for your help,will check in the morning.