5.4 misfire
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Joined: Apr 2012
Posts: 31
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nice....
Not milky under gas cap. Got smoke machine going and found a vacuum leak. It was on the very back of intake toward firewall. There is some kind of sensor mounted to back of intake, has 2 bolt flange mounting it to intake, right beneath that there is a 3/4" hose barb coming out of intake, this is the hose that was leaking. This hose reduced down to 1/4" and ran down firewall and back across passenger side valve cover and was plugged off. Can you tell me what this hose was supposed to go to, wondering what previous owner removed? I removed broken hose and plugged it off, smoke tested again and found no leaks, reset codes. Will update once I drive and see if codes comeback. Thanks for all the input. Really curious to know what that hose originally went to.
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