Bronco 2.7 Failures…

[FORZDA3]

https://jalopnik.com/nhtsa-is-inves...tter&utm_medium=email&utm_campaign=2022-07-27

 

[TMac]

This engine has been around for awhile, so I'd guess a supplier problem. There are four possibilities: The valves themselves are breaking; that would be the easiest to diagnose. The retainers are breaking- possible bad heat treatment. The springs are failing- possible bad heat treatment. The hydraulic lifter which also serves as a "guide" for the finger follower is allowing the follower to slip off the valve stem- resulting in the retainers to pop out. All will result in some pretty impressive collateral damage.

 

[Cruising68]

A broken ring land caused my CTSV to blow a rod through the block I'd call that catastrophic collateral damage

 

[TMac]

Catastrophic- wrong thread dude!