Join Date: Nov 2016
Location: Eastern PA, USA
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Exhaust manifold bolt failure.
Or "the Scream" part II.
What I thought was a belt/pulley problem got worse. heavy popping/chirping on startup, right hand side of the engine goes away after a few minutes. Still the screeching under load. More internet research until I came upon stories about exhaust manifold gasket failures as a result of bolts snapping.
Soooo.... I went in there and poked around. Good news is that this is about the only part of the engine you can get to. Bad news is, my warranty expired 3900 miles ago and I bet this is not covered under the power train warrantee. (Early 2017 vehicle)
Last bolt on top, all the way in the back..... Note carbon deposits. Calling dealer tomorrow.
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2017 T250 3.5L Ecoboost 148", Mid Roof.
Last edited by oscarvan; 08-20-2019 at 07:23:PM.