# Replace fuel damper? **URL:** \ **Category:** Maintenance/Repairs\ **Created:** [June 25, 2009, 4:53am UTC](https://community.cartalk.com/t/replace-fuel-damper/32361 "2009-06-25T04:53:47Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![menchaca2005](https://avatars.discourse-cdn.com/v4/letter/m/e95f7d/32.png) [@menchaca2005](https://community.cartalk.com/u/menchaca2005)\ **Post date:** [June 25, 2009, 4:53am UTC](https://community.cartalk.com/t/replace-fuel-damper/32361/1 "2009-06-25T04:53:47Z")
how do i replace the fuel damper on a 98 Toyota Avalon? i have the replacement part and i know where it is on the fuel system and how to relieve the fuel pressure but i cant get the darn thing off! Additionally there is a screw on the top of the original damper but none on the replacement part does that mean i have the wrong part? ---
**Author:** ![Roadrunner](https://avatars.discourse-cdn.com/v4/letter/r/d2c977/32.png) [@Roadrunner](https://community.cartalk.com/u/Roadrunner)\ **Post date:** [June 25, 2009, 6:15pm UTC](https://community.cartalk.com/t/replace-fuel-damper/32361/2 "2009-06-25T18:15:57Z")
Sorry, but I have to ask you a question: what is a ‘fuel damper’ and how does it work? I’ve never heard the term before. That said, I guessing the screw is to bleed air or pressure from the fuel system. ---
**Author:** ![texases](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/texases/32/862_2.png) [@texases](https://community.cartalk.com/u/texases)\ **Post date:** [June 25, 2009, 7:11pm UTC](https://community.cartalk.com/t/replace-fuel-damper/32361/3 "2009-06-25T19:11:29Z")
Same here, so here’s everything you wanted to know about them: [http://findarticles.com/p/articles/mi\_qa3828/is\_200401/ai\_n9369236/](http://findarticles.com/p/articles/mi_qa3828/is_200401/ai_n9369236/) ---
**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:** [June 25, 2009, 7:23pm UTC](https://community.cartalk.com/t/replace-fuel-damper/32361/4 "2009-06-25T19:23:07Z")
If you look at the bottom portion of the damper. you’ll see a hex where a wrench can be used to unscrew the damper. Tester ---
**Author:** ![Roadrunner](https://avatars.discourse-cdn.com/v4/letter/r/d2c977/32.png) [@Roadrunner](https://community.cartalk.com/u/Roadrunner)\ **Post date:** [June 26, 2009, 2:46am UTC](https://community.cartalk.com/t/replace-fuel-damper/32361/5 "2009-06-26T02:46:06Z")
That’s odd, I read the complete article and where they say the photo of the damper is (to the left) the advertiser saw fit to use that space. Am I wrong in thinking the fuel pressure regulator does the same job? ---
**Author:** ![texases](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/texases/32/862_2.png) [@texases](https://community.cartalk.com/u/texases)\ **Post date:** [June 26, 2009, 3:18am UTC](https://community.cartalk.com/t/replace-fuel-damper/32361/6 "2009-06-26T03:18:46Z")
No, I think a regulator reduces a higher pressure to a lower pressure as fuel flows through it, while a damper is off to the side, absorbing pressure variations. Kind of like a length of vertical dead end pipe on a home water system to minimize water ‘hammer’. ---
**Author:** ![hellokit](https://avatars.discourse-cdn.com/v4/letter/h/6a8cbe/32.png) [@hellokit](https://community.cartalk.com/u/hellokit)\ **Post date:** [June 26, 2009, 2:59pm UTC](https://community.cartalk.com/t/replace-fuel-damper/32361/7 "2009-06-26T14:59:09Z")
If you go to this site: [http://www.motor.com/article.asp?article\_ID=748](http://www.motor.com/article.asp?article_ID=748) and click on the Download PDF, it will download and show you the photographs. The article is from the January, 2004 issue of MOTOR. Yo will find a lot of good articles in Motor Magazine. ---
**Author:** ![Roadrunner](https://avatars.discourse-cdn.com/v4/letter/r/d2c977/32.png) [@Roadrunner](https://community.cartalk.com/u/Roadrunner)\ **Post date:** [June 27, 2009, 1:42am UTC](https://community.cartalk.com/t/replace-fuel-damper/32361/8 "2009-06-27T01:42:51Z")
Thanks Hellokit for posting that one. Now I see what it looks like, I’m going to check out my '04 Toyota Matrix and see if it has one. The car runs beautifully so I sure won’t be messing with it.