# Knocking (Tapping) Noise when pushing gas **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** mitsubishi\ **Created:** [May 6, 2016, 10:34pm UTC](https://community.cartalk.com/t/knocking-tapping-noise-when-pushing-gas/93220 "2016-05-06T22:34:11Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![OZRallyXOXO](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/ozrallyxoxo/32/3218_2.png) [@OZRallyXOXO](https://community.cartalk.com/u/OZRallyXOXO)\ **Post date:** [May 6, 2016, 10:34pm UTC](https://community.cartalk.com/t/knocking-tapping-noise-when-pushing-gas/93220/1 "2016-05-06T22:34:11Z")
I have a Manual 2003 Mitsubishi OZ Rally Lancer. She was sitting for awhile due to the main cylinder causing issues for the clutch, which is now fixed. But I noticed the other day that whenever I press the gas there’s a tap noise for a second and goes away, it happens every time I put my foot on the gas. The sound is like someone tapping there foot on tile floor. I can also feel the tap noise. I’m not sure what it could be. I know the passenger front tire is tinking when I drive around, which I’m getting fixed this afternoon, but any ideas on what could be causing this noise when I accelerate and how urgent would it need to be fixed? ---
**Author:** ![ken\_green](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/ken_green/32/816_2.png) [@ken\_green](https://community.cartalk.com/u/ken_green)\ **Post date:** [May 6, 2016, 10:43pm UTC](https://community.cartalk.com/t/knocking-tapping-noise-when-pushing-gas/93220/2 "2016-05-06T22:43:03Z")
fast tapping or slow ? Does it change with engine RPM or road speed ? ---
**Author:** ![OZRallyXOXO](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/ozrallyxoxo/32/3218_2.png) [@OZRallyXOXO](https://community.cartalk.com/u/OZRallyXOXO)\ **Post date:** [May 6, 2016, 10:48pm UTC](https://community.cartalk.com/t/knocking-tapping-noise-when-pushing-gas/93220/3 "2016-05-06T22:48:10Z")
It’s about 3 taps, within 1-2 seconds. It doesn’t change with speed or RPM. ---
**Author:** ![insightful](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/insightful/32/2732_2.png) [@insightful](https://community.cartalk.com/u/insightful)\ **Post date:** [May 7, 2016, 10:09pm UTC](https://community.cartalk.com/t/knocking-tapping-noise-when-pushing-gas/93220/4 "2016-05-07T22:09:21Z")
If it happens only while the gas pedal is moving, maybe the pedal/linkage corroded while sitting and just needs a good shot of WD40 everywhere. ---
**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:** [May 14, 2016, 3:45am UTC](https://community.cartalk.com/t/knocking-tapping-noise-when-pushing-gas/93220/5 "2016-05-14T03:45:00Z")
When you accelerate there’s an inertial force on the car which pushes the front end of the upward toward the sky and the back end down toward the ground. So the suspension parts at both ends of the car are moving when you step on the gas pedal. If there’s any play at all in those parts, this could happen. Suspect ball joint or suspension bushing problems. ---
**Author:** ![bing](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/bing/32/4619_2.png) [@bing](https://community.cartalk.com/u/bing)\ **Post date:** [May 14, 2016, 4:38am UTC](https://community.cartalk.com/t/knocking-tapping-noise-when-pushing-gas/93220/6 "2016-05-14T04:38:41Z")
Any chance its preignition from too low an octane rating? Try a tank of higher octane rating. ---
**Author:** ![OZRallyXOXO](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/ozrallyxoxo/32/3218_2.png) [@OZRallyXOXO](https://community.cartalk.com/u/OZRallyXOXO)\ **Post date:** [May 25, 2016, 9:02am UTC](https://community.cartalk.com/t/knocking-tapping-noise-when-pushing-gas/93220/7 "2016-05-25T09:02:45Z")
I did some inspecting. Took a look at my intake and it was way too loose. It was banging around in especially when I hit the gas and it now has a hole. Glad it wasn’t anything super super bad. Thanks for the comments you guys