# Manual car bucking when accelerating **URL:** \ **Category:** General Discussion\ **Tags:** civic-sdn, civic, honda\ **Created:** [April 16, 2023, 7:14am UTC](https://community.cartalk.com/t/manual-car-bucking-when-accelerating/190119 "2023-04-16T07:14:27Z")\ **Posts on this page:** 12\ **Page:** 1
**Author:** ![MuscleCamster](https://avatars.discourse-cdn.com/v4/letter/m/bc79bd/32.png) [@MuscleCamster](https://community.cartalk.com/u/MuscleCamster)\ **Post date:** [April 16, 2023, 7:14am UTC](https://community.cartalk.com/t/manual-car-bucking-when-accelerating/190119/1 "2023-04-16T07:14:28Z")
I have a 2012 Honda Civic DX, manual transmission. When I try to accelerate fast after shifting into second gear, the car bucks very violently. I have already ran a couple of bottles of fuel injector cleaner through the system with no change. How do I fix this? It doesn’t buck when accelerating fast after shifting into 3rd-5th gear. If I slowly release the clutch while slowly accelerating, it doesn’t jerk. ---
**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\ **Post date:** [April 16, 2023, 11:20am UTC](https://community.cartalk.com/t/manual-car-bucking-when-accelerating/190119/2 "2023-04-16T11:20:38Z")
Is the check engine light on? If it isn’t on I’d suggest the clutch is slipping just a little bit as if it has been contaminated with oil. ---
**Author:** ![lion9car](https://avatars.discourse-cdn.com/v4/letter/l/59ef9b/32.png) [@lion9car](https://community.cartalk.com/u/lion9car)\ **Post date:** [April 16, 2023, 2:34pm UTC](https://community.cartalk.com/t/manual-car-bucking-when-accelerating/190119/3 "2023-04-16T14:34:01Z")
Although the clutch seems more likely to me, I’d say there’s also the possibility that your fuel pump is starting to fail, as this situation is probably where you need the maximum fuel delivery. You could rule that out easily by testing the fuel pressure. ---
**Author:** ![shanonia](https://avatars.discourse-cdn.com/v4/letter/s/9de053/32.png) [@shanonia](https://community.cartalk.com/u/shanonia)\ **Post date:** [April 16, 2023, 3:18pm UTC](https://community.cartalk.com/t/manual-car-bucking-when-accelerating/190119/4 "2023-04-16T15:18:46Z")
There might be an OBD2 code stored even if the problem hasn’t caused the Check Engine light to come on. That could provide a clue. ---
**Author:** ![davesmopar](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/davesmopar/32/41750_2.png) [@davesmopar](https://community.cartalk.com/u/davesmopar)\ **Post date:** [April 16, 2023, 5:14pm UTC](https://community.cartalk.com/t/manual-car-bucking-when-accelerating/190119/5 "2023-04-16T17:14:55Z")
Sounds like clutch chatter to me, maybe bring your rpms up a little more before dumping the clutch going into 2nd… ---
**Author:** ![Nevada\_545](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/nevada_545/32/41232_2.png) [@Nevada\_545](https://community.cartalk.com/u/Nevada_545)\ **Post date:** [April 16, 2023, 5:48pm UTC](https://community.cartalk.com/t/manual-car-bucking-when-accelerating/190119/6 "2023-04-16T17:48:41Z")
Inspect the air intake tube between the air cleaner and throttle body for cracks/air leaks. ---
**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:** [April 16, 2023, 9:05pm UTC](https://community.cartalk.com/t/manual-car-bucking-when-accelerating/190119/7 "2023-04-16T21:05:13Z")
What happens if you feather the clutch enough to accelerate (slowly) from a stop in 4th or 5th gear? If the clutch doesn’t feel like it is slipping then, I’d guess you have some sort of misfire or fuel/air-delivery problem. Does the engine ever completely shut off for no apparent reason, and you have to wait before it will start again? Suggest to post the diagnostic codes if there are any. fyi, I had a problem similar to this on my 90’s Corolla one time, turned out to be a combination of a problem with the idle air control gadget and the throttle position sensor. ---
**Author:** ![MuscleCamster](https://avatars.discourse-cdn.com/v4/letter/m/bc79bd/32.png) [@MuscleCamster](https://community.cartalk.com/u/MuscleCamster)\ **Post date:** [April 25, 2023, 8:13am UTC](https://community.cartalk.com/t/manual-car-bucking-when-accelerating/190119/8 "2023-04-25T08:13:22Z")
No, the check engine light is not on. ---
**Author:** ![Beancounter](https://avatars.discourse-cdn.com/v4/letter/b/59ef9b/32.png) [@Beancounter](https://community.cartalk.com/u/Beancounter)\ **Post date:** [April 26, 2023, 1:30pm UTC](https://community.cartalk.com/t/manual-car-bucking-when-accelerating/190119/9 "2023-04-26T13:30:32Z")
> [@MuscleCamster](#): > > No, the check engine light is not on. Sure but again, did you check for Codes? Sometimes a failing injector/fuel delivery system may run fine under normal conditions but “fail” just enough to cause your problem under quick, hard driving without triggering the check engine light. ---
**Author:** ![MikeInNH](https://avatars.discourse-cdn.com/v4/letter/m/a587f6/32.png) [@MikeInNH](https://community.cartalk.com/u/MikeInNH)\ **Post date:** [April 26, 2023, 1:54pm UTC](https://community.cartalk.com/t/manual-car-bucking-when-accelerating/190119/10 "2023-04-26T13:54:28Z")
This sounds more like a clutch problem to me. ---
**Author:** ![Beancounter](https://avatars.discourse-cdn.com/v4/letter/b/59ef9b/32.png) [@Beancounter](https://community.cartalk.com/u/Beancounter)\ **Post date:** [April 26, 2023, 11:52pm UTC](https://community.cartalk.com/t/manual-car-bucking-when-accelerating/190119/11 "2023-04-26T23:52:15Z")
> [@MikeInNH](#): > > This sounds more like a clutch problem to me. Maybe yes and I have no doubt that it’s possible but may I point out that it’s a whole lot easier and cheaper to evaluate the injectors and their fuction and spray pattern than it is to pull the transmission to look at the clutch? ---
**Author:** ![MikeInNH](https://avatars.discourse-cdn.com/v4/letter/m/a587f6/32.png) [@MikeInNH](https://community.cartalk.com/u/MikeInNH)\ **Post date:** [April 27, 2023, 1:15pm UTC](https://community.cartalk.com/t/manual-car-bucking-when-accelerating/190119/12 "2023-04-27T13:15:59Z")
> [@Beancounter](#): > > Maybe yes and I have no doubt that it’s possible but may I point out that it’s a whole lot easier and cheaper to evaluate the injectors and their fuction and spray pattern than it is to pull the transmission to look at the clutch? There are tests you can run to help determine if it’s a clutch or not - WITHOUT pulling tranny. They would be far easier than pulling the injectors.