# 1993 Lexus ES 300 runs rough, CEL on **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** es300, lexus\ **Created:** [September 20, 2018, 10:10pm UTC](https://community.cartalk.com/t/1993-lexus-es-300-runs-rough-cel-on/125363 "2018-09-20T22:10:46Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Alan44](https://avatars.discourse-cdn.com/v4/letter/a/82dd89/32.png) [@Alan44](https://community.cartalk.com/u/Alan44)\ **Post date:** [September 20, 2018, 10:10pm UTC](https://community.cartalk.com/t/1993-lexus-es-300-runs-rough-cel-on/125363/1 "2018-09-20T22:10:46Z")
3 and 5 low compression got spark engines runs rough engine light on. ---
**Author:** ![George\_San\_Jose1](https://avatars.discourse-cdn.com/v4/letter/g/e5b9ba/32.png) [@George\_San\_Jose1](https://community.cartalk.com/u/George_San_Jose1)\ **Post date:** [September 21, 2018, 3:09am UTC](https://community.cartalk.com/t/1993-lexus-es-300-runs-rough-cel-on/125363/2 "2018-09-21T03:09:30Z")
Compression measurement results on all cylinders? Diagnostic codes? ---
**Author:** ![db4690](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/db4690/32/2583_2.png) [@db4690](https://community.cartalk.com/u/db4690)\ **Post date:** [September 21, 2018, 8:40pm UTC](https://community.cartalk.com/t/1993-lexus-es-300-runs-rough-cel-on/125363/3 "2018-09-21T20:40:32Z")
After posting compression for all 6 cylinders, as per George, you might want to consider a valve lash adjustment I’m almost certain this engine uses those bucket-type shims to adjust the valve lash It’s quite possible the valve lash on multiple cylinders is too tight, causing low compression