Bronco (2.7 engine) shut off on highway, left me on the side of the road

Dragline

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That would be a surprise as valve making tech goes back to the beginning of four stroke engines.
But in the Covid era anything is possible.
Bad parts happen in large scale mfg. They should be caught before they go in an engine, but sometimes they slip through.

Several years ago the mining company I work for bought 5 large mining trucks from Cat. The engine on one threw a rod at 5 or 6k hours, roughly 1/3 of its expected life. Cat was able to trace it back to a dull tool that was leaving a burr in the crankshaft oil galleries. In that amount of hours a burr would break off and go in to one of the rod bearings. They pretty quickly had a range of engines that had the issue figured out and a plan to address. The biggest difference was that they actually let us know what was going on!
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da_jokker

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Makes me wonder if it is hitting the piston first and then breaking from the stem. VVT gone astray perhaps?
Yeah I don't get why they don't have all engines be non interference ones nowadays.

Having a timing chain or belt break should not hose the engine.
 

Techun

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Call me old fashioned but I just don't fully trust the Ecoboost engines. I would have rather Ford installed one of the Cyclone series V6 engines (3.3, 3.5, 3.7) or the 5.0 Coyote. You can't beat the reliability of naturally aspirated engines. Threads like this only reinforce my distrust.
Ew. I wouldn't touch one of those v6s
 

Bubbabow

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So my bronco was starting build 9/7 and this afternoon the engine when into complete failure. I have about 4,000 miles on it mostly road but several 4-6 hr off road runs and one oil change. It all of a sudden made noise that sounded like the entire engine was coming apart and then started sputtering and then the engine light came on and a message oil getting low stop engine. Then mass smoke started bellowing from undernight and it dies get it off road and oil was flowing out from multiple areas under the engine. Towed to dealer I am positive a valve or something blow and went through the bottom of the engine and killed it. So guess I am now in one of the failed 2.7 cases. It was working fine until this unexpected thing all of a sudden. I had no issues nor indications of issue before within the 4,000 milesw
 

Dragline

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So my bronco was starting build 9/7 and this afternoon the engine when into complete failure. I have about 4,000 miles on it mostly road but several 4-6 hr off road runs and one oil change. It all of a sudden made noise that sounded like the entire engine was coming apart and then started sputtering and then the engine light came on and a message oil getting low stop engine. Then mass smoke started bellowing from undernight and it dies get it off road and oil was flowing out from multiple areas under the engine. Towed to dealer I am positive a valve or something blow and went through the bottom of the engine and killed it. So guess I am now in one of the failed 2.7 cases. It was working fine until this unexpected thing all of a sudden. I had no issues nor indications of issue before within the 4,000 milesw
Damn sorry to read that. Take a pic of the sticker on the left front valve cover, report the numbers on this thread.
 
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69 Mach I

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So my bronco was starting build 9/7 and this afternoon the engine when into complete failure. I have about 4,000 miles on it mostly road but several 4-6 hr off road runs and one oil change. It all of a sudden made noise that sounded like the entire engine was coming apart and then started sputtering and then the engine light came on and a message oil getting low stop engine. Then mass smoke started bellowing from undernight and it dies get it off road and oil was flowing out from multiple areas under the engine. Towed to dealer I am positive a valve or something blow and went through the bottom of the engine and killed it. So guess I am now in one of the failed 2.7 cases. It was working fine until this unexpected thing all of a sudden. I had no issues nor indications of issue before within the 4,000 milesw
I feel your pain...welcome to the club :(
 

Bubbabow

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Cant look at stickers unfortunately right now it was towed to dealer and only car so I have deal with Ford about a rental car ASAP as soon as I can
Get that I can see about going over to dealer and take pictures to post of stickers. All I know now the car started build on 9/6 of course that has nothing to do with engine build date except it was before date date
 

BroncoBuckaroo

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That makes at least three this week with B6G members -

Do you see the engine ser# sticker with big "121" on right-side - see below -
From this you can determine your 'Engine Build Date' -

20211115_170015.jpg
how do you figure out from the sticker when it was produced?....never mind found your other post
 
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Skeeterjack

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Not what i wanted to hear with winter coming. Hope this isn’t a sign of things to come. Should i have bought the Toyota TDR ?
 

BroncoMan13

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I hear about all of these new cars and trucks having problems like this lately. It makes me wonder if it's because of the pandemic. These factories are getting behind because of chip and parts shortage and they get backed up big time and then have to rush and get caught up. Not to mention being short staff and a million other problems.

Almost makes you wish you can wait until everything is back to normal and running smoothly to buy a vehicle. I know this sort of thing has always happened but it definitely seems like it's happening a lot more since the pandemic.
 
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BroncoBuckaroo

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I hear about all of these new cars and trucks having problems like this lately. It makes me wonder if it's because of the pandemic. These factories are getting behind because of chip and parts shortage and they get backed up big time and then have to rush and get caught up. Not to mention being short staff and a million other problems.

Almost makes you wish you can wait until everything is back to normal and running smoothly to by a vehicle. I know thos sort of thing has always happened but it definitely seems like it's happening a lot more since the pandemic.
im sure that’s part..interestingly, searching the F150 forums show zero problems with the 2.7 engines and there are way more of these in F150’s presently rolling down the line than Bronco s
 
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