# 2001 hyundai perfect on Thurs. Engine light flicker, sulfur smell, rough running, low power on Fri

**URL:** <https://community.cartalk.com/t/2001-hyundai-perfect-on-thurs-engine-light-flicker-sulfur-smell-rough-running-low-power-on-fri/72289>\
**Category:** Maintenance/Repairs\
**Created:** [May 6, 2012, 7:24pm UTC](https://community.cartalk.com/t/2001-hyundai-perfect-on-thurs-engine-light-flicker-sulfur-smell-rough-running-low-power-on-fri/72289 "2012-05-06T19:24:48Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![dlamn8](https://avatars.discourse-cdn.com/v4/letter/d/f6c823/32.png) [@dlamn8](https://community.cartalk.com/u/dlamn8)\
**Post date:** [May 6, 2012, 7:24pm UTC](https://community.cartalk.com/t/2001-hyundai-perfect-on-thurs-engine-light-flicker-sulfur-smell-rough-running-low-power-on-fri/72289/1 "2012-05-06T19:24:48Z")

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Hi - 2001 hyundai Elantra 97000 mi. perfect on Thurs. Engine light flicker, sulfur smell,  
rough running, low power on Friday

First thought / hope, Bad gas? Had Filled up on Weds… I added dry gas and FI Cleaner.

Second thouht / fear Cat. Converter

Third . … . ??? Any ideas / suggs. Thanks!!!

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**Author:** ![Rod-Knox](https://avatars.discourse-cdn.com/v4/letter/r/a183cd/32.png) [@Rod-Knox](https://community.cartalk.com/u/Rod-Knox)\
**Post date:** [May 6, 2012, 7:51pm UTC](https://community.cartalk.com/t/2001-hyundai-perfect-on-thurs-engine-light-flicker-sulfur-smell-rough-running-low-power-on-fri/72289/2 "2012-05-06T19:51:09Z")

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If the ENGINE light is flashing the computer is warning that there is a serious problem that could be narrowed down somewhat with a code reader. Has the timing belt been replaced? A timing belt one slot out of time will cause your problems.

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**Author:** ![dlamn8](https://avatars.discourse-cdn.com/v4/letter/d/f6c823/32.png) [@dlamn8](https://community.cartalk.com/u/dlamn8)\
**Post date:** [May 7, 2012, 11:40pm UTC](https://community.cartalk.com/t/2001-hyundai-perfect-on-thurs-engine-light-flicker-sulfur-smell-rough-running-low-power-on-fri/72289/3 "2012-05-07T23:40:07Z")

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Hi - good advice, thanks. Did belt around 60K. This time it Turned out One Cyl. wasn’t firing. New plugs and wires got me rolling. Thanks.