93" f-150 4x4 351 problems
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Joined: Aug 2004
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93" f-150 4x4 351 problems
I just bought a 93" f-150 with a 351 motor , at low speeds it has a miss in the motor , replaced all the ignition and did not help , there are 3 or 4 vacum lines that go from driver side to passenger side that are red . green and yellow , maybe 1 more can't remember , but the green one is chewed off and i can not find where it goes , PLEASE HELP .can that cause mi miss ??? same problem as alot more on here with ac going to d-frost , white line is replaced and still does it ...also there is a little black can on the passenger side fender well that has a heater hose looking thing going in it and nothing out the other side , blows alot of air out , is ther something missing??
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Joined: Aug 2007
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From: Belle Mead NJ
Most of those vac lines are for emissions stuff. There is 1 that goes to the fuel pressure reg, that is behind the upper intake. I believe the green go to something by the coil for the air system. Then there are 3 vac lines on the throttle body its self. If you put your ear up 2 the heater box under the dash do you hear a vac leak? That white line under the hood on the right corner goes down 2 the blend door. if it is broken in the box then youll have to take it out or plug it up. Try plugging some of the vac lines up and see if it goes away.
