Bimmerfest - BMW Forums - View Single Post - X5 xDrive35d catastrophic engine failure
View Single Post
Old 10-06-2009, 08:37 PM
JerrySpaeder JerrySpaeder is offline
Registered User
Location: Dallas
Join Date: May 2006
Posts: 23
Mein Auto: 09 X5 35d
Originally Posted by Funf Dreisig View Post
...The progressive knocking you heard is probably when the rod cap was working loose and stressing the other rod bolt to the point of failure. Once both rod bolts failed, the now loose rod end was probably hit by the crank shaft slamming/wedging it into the side of the engine block. This would 'seize' the engine dropping RPM to zero instantly.
A quick deceleration of all that spinning machinery might explain the strong jolt we felt, one powerful enough to make me think I had run over something. I really wanted to see the video feed from that little camera. There's no visible damage outside. No dripping fluid. Just an idiot light on the dash and no starter response.

The whole situation is fascinating. Annoying and inconvenient, but fascinating.
Reply With Quote