We have a 2016 CX5 that was purchased new and has been maintained at the dealership its entire life. Last weekend while driving the car stopped on the HWY and had to be towed home. I had the codes read and it was the crankshaft sensor. After having it looked at.....because dealership was closed......was told that there was a hole in the case due to one of the lower piston rod caps broke off and destroyed the sensor and exited the lower motor case. Now we have to buy another engine on a car with only 100014 miles. This type of failure is unacceptable. Anyone else experience this premature engine failure and what are some remedies?

 

To be honest, it just sounds like bad luck struck your car...

 

It really sounds more like someone beat the sheeet out of the engine. The Skyactiv engine would not have randomly spit out a connecting rod bolt unless the engine was abused.
This would also not have really been detected from anyone even myself unless there was signs and noises or the oil pan dropped and each rod and main cap pulled and inspected.

Sorry but this happens at time when you buy a used vehicle.

Sorry this happens to anyone but its not really preventive

 

Yah if it was purchased used then it's not impossible. I was under the assumption that they bought the car new and have owned it the whole time (unless I misread it).

 

Even if purchased new, there are no guarantees as to the life of your engine. Why do some people die of random things in their 20's? Things happen. I get this question in my ER all the time. "Why did my animal have this happen?" I tell them "Vegas odds"....
IMHO 100k isn't terrible for a motor.

 

Fully agree with chickdr19:
There is no guarantee on anything no matter how well you maintain it, take care of it or good you treat it.
In my 72 years on the planet, I can readily attest to that being a "fact of life".

 

[QUOTE=Callisto;237074]
Back on topic : I would really love to see a few detailed pictures of that connecting rod bolt that failed!
Don't anyone take this wrong but something smells fishy????

There are actually instances of connecting rod bolt failures which an easy Google search with pictures will confirm.
Though you are correct that without seeing the evidence in this particular case we cannot confirm that.

I can confirm that I have seen bolt failures several times in farm/automotive/warehouse conveyor and Biotech manufacturing equipment.
Some caused by faulty installation, stripped threads, wrong torque spec. wrong bolt and others by faulty material and/or manufacturing in the bolt itself.
As a long time first responder in all my employment fields I've even had the unfortunate experience to personally have seen pacemakers and heart valves/stents fail.
Which is why I say there is no guarantee on anything except death which only gets closer every day we wake up

 

Seems as if this line was missed by most here.

 

I didn't miss it at all, I wasn't the one who brought up "bolt".
Every single type of manufactured engine (or anything) has had at least one instance where one of them have come undone, all you can do is hope it's never one you own, are in or are using.
Proper maintenance and operation helps but it's still no guarantee it won't ever happen.

 

lol last posting was Jun 2, 2022, 04:23 AM ^^^^
I guess this thread woke him up?


I did'nt miss it either. And it is why I responded with I would like to see the actual part?
Maybe you missed those response or didn't see them?