N14 Engine Check Timing Chain Tensioner and Timing Chain

Bulletin number

M110413

Component

Engine

Summary

Service Action: N14 Engine Check Timing Chain Tensioner and Timing Chain. The timing chain tensioner applies pre-tension to the timing chain guide rail mechanism. In some cases, the tensioner spring force may be too low. Depending on the severity of the wear, it may lead to a rattling noise when starting the engine cold or when the engine is idling. CAUSE The timing chain tensioner internal tolerances are not consistent.

Owners of these vehicles have filed 501 complaints in the engine category.