# 1998 Chevrolet Tahoe - Rattles and knocks

**URL:** <https://community.cartalk.com/t/1998-chevrolet-tahoe-rattles-and-knocks/198089>\
**Category:** Maintenance/Repairs\
**Tags:** chevrolet, engines\
**Created:** [November 20, 2024, 9:03pm UTC](https://community.cartalk.com/t/1998-chevrolet-tahoe-rattles-and-knocks/198089 "2024-11-20T21:03:05Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Apache](https://avatars.discourse-cdn.com/v4/letter/a/2acd7d/32.png) [@Apache](https://community.cartalk.com/u/Apache)\
**Post date:** [November 20, 2024, 9:03pm UTC](https://community.cartalk.com/t/1998-chevrolet-tahoe-rattles-and-knocks/198089/1 "2024-11-20T21:03:06Z")

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Runs good in idle, give it gas and it sounds like out of time chain rattle knock.

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**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\
**Post date:** [November 22, 2024, 3:16pm UTC](https://community.cartalk.com/t/1998-chevrolet-tahoe-rattles-and-knocks/198089/2 "2024-11-22T15:16:53Z")

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Remove the distributor cap.

Take a breaker bar and a socket and rotate the engine by hand in the normal direction.

Now rotate the engine slowly in the opposite direction while watching the rotor in the distributor.

If the engine can be rotated 5 degrees or more before the rotor starts to move, it indicates a stretched timing chain.

Tester