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NHTSA opens investigation into 2.7L V6 EcoBoost engine failures

OCNORB1974

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https://fordauthority.com/2022/07/n...ronco-2-7l-v6-ecoboost-failure-investigation/

Now, the NHTSA has indeed opened an investigation into 2021 Ford Bronco models equipped with the 2.7L V6 EcoBoost.

The investigation pertains to an estimated 25,538 2021 Ford Bronco models, while the NHTSA has received 26 complaints related to the matter thus far. Those that petitioned for the investigation – which is in the preliminary stages – have experienced a loss of power at highway speeds after which the vehicle will not restart. Following a meeting with Ford, NHTSA discovered that this alleged loss of power is a result of catastrophic engine failures due to the engine valves failing.

Ford has identified the root cause of this issue as the valve “keepers” not holding the retainer in place, which allows the valve spring to detach from the valve, resulting in interference between the valve and piston. This interference can cause an engine lockup. Based on an initial review of the applicable materials, the NHTSA has decided to grant the petition and open this preliminary evaluation to assess the scope, frequency, and potential safety-related consequences of the alleged defect.
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A little more detail into what the actual problem was (is). Also mentions again (FA seems to be the only place that does), the oil pan having an issue. Wonder if that is more of a problem caused by the incorrect, shorter dipstick?
 

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A little more detail into what the actual problem was (is). Also mentions again (FA seems to be the only place that does), the oil pan having an issue. Wonder if that is more of a problem caused by the incorrect, shorter dipstick?
First off, an incorrect dipstick would have no effect on an engine failing before any oil change. And second, they said the problem: " Ford has identified the root cause of this issue as the valve “keepers” not holding the retainer in place, which allows the valve spring to detach from the valve, resulting in interference between the valve and piston. This interference can cause an engine lockup."

I don't understand why you came to such a weird conclusion, but okay.
 

Hopeless Diamond

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First off, an incorrect dipstick would have no effect on an engine failing before any oil change. And second, they said the problem: " Ford has identified the root cause of this issue as the valve “keepers” not holding the retainer in place, which allows the valve spring to detach from the valve, resulting in interference between the valve and piston. This interference can cause an engine lockup."

I don't understand why you came to such a weird conclusion, but okay.
Did you read the entire Ford Authority article.? Never said it was the cause of the valve issues. It again mentions a different problem with the oil pan. If the dipstick is too long, it would incorrectly read full when it is not, thereby possibly oil starvation that is mentioned in at the end of the article.
 
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This is big news if true! The speculation here has been that weak valves were to blame. If that isn't the case, and it is the keepers, what are the likely reasons for this?
Improper installation, poor design?
 

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