# Timing chains in cadillac

**URL:** <https://community.cartalk.com/t/timing-chains-in-cadillac/5271>\
**Category:** Maintenance/Repairs\
**Created:** [September 29, 2007, 3:34pm UTC](https://community.cartalk.com/t/timing-chains-in-cadillac/5271 "2007-09-29T15:34:36Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![gwilson40759](https://avatars.discourse-cdn.com/v4/letter/g/3bc359/32.png) [@gwilson40759](https://community.cartalk.com/u/gwilson40759)\
**Post date:** [September 29, 2007, 3:34pm UTC](https://community.cartalk.com/t/timing-chains-in-cadillac/5271/1 "2007-09-29T15:34:36Z")

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i replaced head gaskets in 98 caddy 32 valve northstar engine. i marked both cams before removing chain then put cams back in exact same place. put chain on now engine valves rattle on left side. i pulled front covers off and both valve covers then lined up timing marks on crank with all 4 cams timing marks at 90 degrees and still same rattle like engine is not timed. what am i doing wrong?