2.7L blown engine failure list . . 68 so far [Updated: December 13, 2022]

[KnoxGnater]

So as a 21209'er with 5500 Miller's, I'm watching this closely. Has anyone mentioned lack of sufficient oil as a potential cause? Wasn't there discussion that Broncos were coming a quart low?

My oil level was fine on initial delivery, and the dealer changed it at 1500 miles with the correct amount. I checked it again post failure, it was still at the correct level, no milky look, foam, or glitter that I saw. I certainly didn't hear or feel anything that would match the destruction from the RUD posted above. Mine did find a way to send all the coolant out the tailpipe, so to me that means a pretty catastophic upper end failure (valves, head gasket, etc), not neccesarily the bottom (rods, pistons, etc). It would also crank over without complaint, but not fire at all (total lack of compression??). I wish I could be at the dealer helping tear it down, but that's not an option.

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[JPye]

My oil level was fine on initial delivery, and the dealer changed it at 1500 miles with the correct amount. I checked it again post failure, it was still at the correct level, no milky look, foam, or glitter that I saw. I certainly didn't hear or feel anything that would match the destruction from the RUD posted above. Mine did find a way to send all the coolant out the tailpipe, so to me that means a pretty catastophic upper end failure (valves, head gasket, etc), not neccesarily the bottom (rods, pistons, etc). It would also crank over without complaint, but not fire at all (total lack of compression??). I wish I could be at the dealer helping tear it down, but that's not an option.

While the failure mechanism can manifest in a packed cylinder causing a lower end RUD, the root causes are likely the same. The valves stop doing their jobs, and some fall into the limit space of the cylinder.

 

[Snowdogyyz]

For a hilarious read, go over to BN and read the thread where someone posted the Motor Trend article. MT is a “total rag” and haven’t been trusted for years. Although if MT comes out with some positive review- it’ll be the best source ever for auto news and reviews! The fanboyism over there is just laughable. We’re all fans of the bronco- we ordered one (some people two)! But I’m not giving ford some kind of hero worship, especially after a deplorable release with this thing.

 

[JPye]

For a hilarious read, go over to BN and read the thread where someone posted the Motor Trend article. MT is a “total rag” and haven’t been trusted for years. Although if MT comes out with some positive review- it’ll be the best source ever for auto news and reviews! The fanboyism over there is just laughable. We’re all fans of the bronco- we ordered one (some people two)! But I’m not giving ford some kind of hero worship, especially after a deplorable release with this thing.

We are active here in this 2.7 thread BECAUSE we want our 2021 Nano Bronco to make it to old age, pampered and plundered because that was what we were sold by FORD marketing.

 

[bytheway]

We are active here in this 2.7 thread BECAUSE we want our 2021 Nano Bronco to make it to old age, pampered and plundered because that was what we were sold by FORD marketing.

Absolutely, I ordered the 2.7 for it's reliability. If I knew it was gonna blow at 10k miles I wouldn't bother with synthetic oil changes and top tier gasoline. I don't want anything bad to happen, but I'm not going to turn a blind eye to the possibility.

 

[JPye]

Absolutely, I ordered the 2.7 for it's reliability. If I knew it was gonna blow at 10k miles I wouldn't bother with synthetic oil changes and top tier gasoline. I don't want anything bad to happen, but I'm not going to turn a blind eye to the possibility.

That is a healthy attitude. You know your Bronco's Nano was built the same day as 4 blown Nanos don't you?

 

[bytheway]

That is a healthy attitude. You know your Bronco's Nano was built the same day as 4 blown Nanos don't you?

Oh yeah, hence why I've been watching this thread closely. I would prefer if nothing was wrong and it lives a long, happy life. I really wouldn't want the heads to be replaced under warranty if I don't have to. No sense in tearing apart a perfectly good engine if there's no reason to.

 

[Snowdogyyz]

Oh yeah, hence why I've been watching this thread closely. I would prefer if nothing was wrong and it lives a long, happy life. I really wouldn't want the heads to be replaced under warranty if I don't have to. No sense in tearing apart a perfectly good engine if there's no reason to.

We’re pulling for you to have zero issues! Some people seem to act like because we update this thread and discuss the issue that we somehow want the 2.7 to suck. I have two on order! I want any issues resolved. I’m not interested in the 2.3 at all. Since my build date keeps getting pushed back twice/weekend, by the time my motor is built it’s hopefully ancient history. This thread is more to help those driving theirs now and specifically with certain Julian dates.

 

[Ksjrb03]

My oil level was fine on initial delivery, and the dealer changed it at 1500 miles with the correct amount. I checked it again post failure, it was still at the correct level, no milky look, foam, or glitter that I saw. I certainly didn't hear or feel anything that would match the destruction from the RUD posted above. Mine did find a way to send all the coolant out the tailpipe, so to me that means a pretty catastophic upper end failure (valves, head gasket, etc), not neccesarily the bottom (rods, pistons, etc). It would also crank over without complaint, but not fire at all (total lack of compression??). I wish I could be at the dealer helping tear it down, but that's not an option.

Make sure they replace your ENTIRE exhaust system! I don't think that is part of any parts replacements I have seen on these.

 

[KnoxGnater]

Make sure they replace your ENTIRE exhaust system! I don't think that is part of any parts replacements I have seen on these.

I've asked the dealer about the cats and what they plan to do (replace vs. flush), but what's the concern with the rest of the system?

 

[jon]

I really hope both of my orders with the V6 come intact. I do not want to order the mailman's 4 cylinder Bronco. Just reminds me of air-cooled 4 cylinder Jeeps, which they claimed had adequate power. Now days with freeway driving at elevation and 35-37 inch tires we really need a V8 but we have to settle for 2.7

 

[SLAY]

4 Door First Edition
My reservation and order
Purchased 12/01/21
Engine failed 2/13/22.
984 Miles
Julian Date: 21179

I was backing Bronco out of the garage. All of a sudden the Bronco started shaking and making a clanking noise then died. It would not start after that. It was towed to local dealer. Dealer diagnosed it and Service Writer said that the #4 Valve failed causing significant damage. Ford is going to completely replace the engine. However, there is no ETA when engine will arrive. Dealership is trying to coordinate a rental car.

 

[KrazeeEyezKilla]

Well, you might need to add me to the list. Still waiting for the dealer to look at it. Today I was driving, maybe 30 mph when all of a sudden I thought I heard some clicking noises from the engine, power drops and was barely able to pull over, then engine dead. Only warning lights I got were a forward sensor failure and then a message telling me to pull over put it in park and restart. Was not able to restart, starter fires but doesn't seem to engage with anything. Based on some quick reading of engine failures I have similar symptoms but no smoke from engine or exhaust. Hoping for the best but preparing for the worst. Unfortunately did not get any engine build info but will see if I can from the dealer depending on what they find.

~2500 miles on the car, built in October.

 

[Carolina Jim]

best of luck to you BOTH....I'm a 182

I guess we're back to:

 

[Jaycefox]

Bought my bronco on Nov 6, 2021. Engine blew at 1,166 miles on Dec 11, 2021. The replacement engine was faulty as well. Still in the shop awaiting its 3rd engine. Not sure the build date.

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