M96 Engine Failure Mode List

[thstone]

With all of the talk about the IMSB and engine failures, I went looking for the often rumored list of 25 (or 26, or 27, or...) M96 engine failure modes but couldn't find it.

Does anyone have this list? If not, here is my first cut at creating it. Feel free to add to this so we have a complete list.

I can proudly stand up and say, "My name is Tom and I have personally experienced engine failure modes #12, #13, and #5."

What is your engine failure mode number?

M96 Engine Failure Modes

1. Cylinder D-chunk
2. Cracked cylinder
3. Loose cylinder sleeve
4. Porous engine case
5. Spun rod bearing
6. Rod bolt failure
7. Rod failure
8. IMS bearing failure
9. IMS gears not fixed to intermediate shaft (press fit failure)
10. Timing chain failure
11. Timing chain tensioner (paddle) failure
12. Valve lifter failure
13. Valve lifter carrier failure
14. Crankshaft failure
15. Cracked head
16. Head gasket failure
17. Oil starvation (high g cornering)
18. Variocam servo failure
19. Blocked oil pickup (excess engine sealant, aka spaghetti)
20. Oil pump drive shaft failure (hex shaft)
21. AOS failure resulting in oil hydraulic lock in cylinders