Mrpenn46

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Not blown but mine has a valve cover leak, parts are on order.


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JPye

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in Ford Service Technicians Forum there are multiple reports of broken valves at the keeper groove
- in the failed engine replacements, many times they don't perform a full diagnostic but sometimes they look into it
valve stem w keeper groove.jpg



valve assembly.jpg
The exploded view reminds me of the cap I put on top of my 1970 VW beetle engine valve stems because the top of the valve stems were worn out. @Lucchese does part 6571 click into the keeper groove or is it to provide standoff between the spring and stem? Or would it be part 6514 that engages that groove. what is part 6571? If the valve is failing at the keeper groove, then it would be the stem that was not properly heat treated or made of the wrong steel alloy. I used to work in the O&G industry, and I recall a well that was completed in the 90's with 5-1/2" casing that was made in China. I can't recall the casing grade, but typically the best pipe has a minimum yield stress between 80kpsi to 110kpsi for use in the industry. This pipe had a catastrophic failure under pressure. The failure point exhibited brittle failure. (45 degree angle sheer failure). It appears the casing was out of spec with regard to hardness. It was too hard. It was possible some lug head thought exceeding the hardness spec was OK, and the pipe was shipped and sold. Is it possible this is what happen at LEP? Is it possible that a valve stem that exceeds the minimum yield strength may have looked good to an inexperienced tech, so they passed the valves without considering the hardness spec? I am certain this sort of failure happens in all industries, and in some cases the mistakes are recognized, but someone makes the decision to let it go and hope for the best. Sometimes they get away with their exceedingly poor decisions, and sometimes they don't. In the end, those who decide to let it go and hope for the best have no place in organizations where not doing their jobs will result in property damage, injury or death. I can't know if there are any managers in FoMoCo who make exceedingly poor decisions and minimize risks because they have gotten away with their bad decisions in the past. But I will mention just one case where managers made the wrong decision because they thought they could ignore the engineers who told them the conditions were out of spec.

NASA SHUTTLE CHALLENGER.
"Come on guys, it is just a simple o-ring".

99C718B6-B8AB-4ED4-8C9E-E2FDC9A1DB70.jpeg
 
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Lucchese

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blown engine reported - 'Bronco 6th Gen' @FB
- Bill Thorpe - January 6, ~ 2700 mi
- ref: @Mean Red GT and @Evolkidbell

maybe Mr. Thorpe will share the engine ser#, or last-8 digits of VIN
- we hope to include the engine build-date in B6g tracking



Blown Engines List - Updates
- w recent new info it appears lines 13) and 15) were prob same person
- i.e. fbf of bytheway, and [email protected]
- not 100% sure, but prob same I believe
- so for now these two are combined, in line# 13)

- this new event w Bill Thorpe is now listed #15)

- the count stays 44




Bill Thorpe @FB.jpg
 
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Lucchese

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blown engine reported - 'Bronco 6th Gen' @FB
- Nick Brown - April 11, ~ 7k mi
- listed #45)
- ref: @Evolkidbell, @bytheway, and @Mean Red GT

maybe Mr. Brown will share the engine ser#, or last-8 digits of VIN
- we hope to include the engine build-date in B6g tracking


Nick Brown @FB - 1.png

Nick Brown @FB - 2.jpg

Nick Brown @FB - photo.png
 
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bytheway

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Jon_MothaFkn_Adams

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I wouldn’t say I’ve panicked, but it was definitly nerve wracking being stranded on the side of a freeway with my dogs in between a guard rail and 18 wheelers for 90 minutes in 25 degree weather.

It’s all relative, but that was a big deal to me. That negative feeling has only been compounded by Ford’s unwillingness to shoulder the tow cost or even offer a courtesy car for the month+ it’s been out of comission since.

I only owned the car for 8 days when it died. Super frustrating. But yeah, I’m not panicked, I’m irritated.

I’d also advise those with Julian dates in the danger zone to drive the shit out of their Broncos and get the replacement over with if one is needed. That 3 year / 36,000 mile warranty doesn’t last forever.
You should be able to get a 100k powertrain warranty out of this. I did. It's worth asking for.
 

gryphon1231

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You should be able to get a 100k powertrain warranty out of this. I did. It's worth asking for.
So just curious, 45 out how many Bronco 's now on the road? I get that this is a serious issues and it sucks, but it seems like this issue is starting to get blown (pardon the pun) out of proportion, people just waiting for the engines to die.
 

BigMeatsBronco

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You probably win the lottery if you paid. Question: Do you pray everytime you drive your Bronco?
Nope, quite the opposite, I think "well is today gonna be V-8 swap time?"
 

Jon_MothaFkn_Adams

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So just curious, 45 out how many Bronco 's now on the road? I get that this is a serious issues and it sucks, but it seems like this issue is starting to get blown (pardon the pun) out of proportion, people just waiting for the engines to die.
I doubt very seriously every person that drives a Bronco is on this forum.
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