N14 Timing Chain "Death Rattle"
SeriousEngineThe "Death Rattle" is the defining issue of the N14-engined Cooper S and JCW. The chain stretches and the tensioner fails, often due to low oil levels, leading to valves hitting pistons if ignored.
Most affected: Cooper S, JCW
Typical symptoms
- •Loud metallic rattle on cold start
- •Misfires
- •Engine management light (timing codes)
What to inspect before you buy
- ✓Start from cold and listen for 30 seconds
- ✓Check for oil level; low oil is a red flag
- ✓Look for invoices for a full chain kit with updated parts