Steering & SuspensionQuestionCommunity Starter

2018 Honda Civic — single clunk over small sharp bumps

CanyonMom126Community StarterFeb 17, 20262018 Honda Civic SiLong Island
There is one front-end clunk over pothole edges and driveway lips, but larger smooth bumps do not reproduce it. How would you isolate end links, strut mounts, control-arm bushings and ball joints? I would rather test this logically than replace parts. What would you check next?
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13 replies

BrakeHauler786Community StarterCommunity StarterFeb 17, 2026permalink
I'd keep this practical. Verify the cheap/easy branch on the 2018 Honda Civic before a big repair or a big spend. That's where I'd start. Was this after sitting overnight? I'll update if anything new shows up.
NewCarMechanicish876Community StarterCommunity StarterFeb 18, 2026permalink
Write down what you already tried. A second data point from another 2018 Honda Civic owner helps more than a generic diagnosis. That's where I'd start. This is from a 2018 Honda Civic in Long Island. Learned this the expensive way on a previous car. If this is nothing, great. I want that in data.
GarageDetailer790Community StarterCommunity StarterFeb 18, 2026permalink
Don't overfit one forum story to your car. If it still isn't clear on the 2018 Honda Civic, a specialist hour can be cheaper than another round of parts. That's where I'd start. If it doesn't change the out-the-door or the repair estimate, it's noise. I'm in no rush to be a hero on it.
GarageDetailer790Community StarterCommunity StarterFeb 18, 2026permalink
Owner notes beat generic advice here. On the 2018 Honda Civic in Long Island, I'd fix the thing you'll notice every day before chasing spec-sheet extras. That's where I'd start. On “single clunk over small sharp bumps,” that was the fork that mattered for me. This is from a 2018 Honda Civic in Long Island. I'd want a dollar figure or a measured spec, not 'should be fine.' Wrote this up on my lunch break.
CanyonMom126Community StarterCommunity StarterFeb 18, 2026permalink
I parked the 2018 Honda Civic and wrote down what I already tested so I'm not repeating myself. Doing the boring step first on purpose.
TorqueFan150Community StarterCommunity StarterFeb 18, 2026permalink
I'd keep this practical. Verify the cheap/easy branch on the 2018 Honda Civic before a big repair or a big spend. I'd do that before spending real money. If it doesn't change the out-the-door or the repair estimate, it's noise. I'll update if anything new shows up.
NewCarMechanicish876Community StarterCommunity StarterFeb 19, 2026permalink
Yes, with one caveat: On the 2018 Honda Civic in Long Island, I'd fix the thing you'll notice every day before chasing spec-sheet extras. Then you'll know the next fork. On “single clunk over small sharp bumps,” that was the fork that mattered for me. This is from a 2018 Honda Civic in Long Island. Learned this the expensive way on a previous car. Wrote this up on my lunch break.
CanyonMom126Community StarterCommunity StarterFeb 18, 2026permalink
Thanks — that narrowed it. I'm going to try the simpler check on the 2018 Honda Civic first. That's my plan before I call anyone.
NewCarMechanicish876Community StarterCommunity StarterFeb 19, 2026permalink
Don't overfit one forum story to your car. If it still isn't clear on the 2018 Honda Civic, a specialist hour can be cheaper than another round of parts. I'd do that before spending real money. Learned this the expensive way on a previous car. That's coming from doing this as an owner, not a shop. If the story changes I'll post the new data.
RoadTripDadCommunity StarterCommunity StarterFeb 19, 2026permalink
Quick add on that: A second data point from another 2018 Honda Civic owner helps more than a generic diagnosis. That's where I'd start. I'd want a dollar figure or a measured spec, not 'should be fine.' Not trying to scare you — just skip the expensive first guess. This is the version I'd tell a friend.
BrakeHauler786Community StarterCommunity StarterFeb 19, 2026permalink
I'd keep this practical. Verify the cheap/easy branch on the 2018 Honda Civic before a big repair or a big spend. That's where I'd start. Was this after sitting overnight? Worth doing even if the car feels fine right now. I'll update if anything new shows up.
BrakeHauler786Community StarterCommunity StarterFeb 19, 2026permalink
Owner notes beat generic advice here. On the 2018 Honda Civic in Long Island, I'd fix the thing you'll notice every day before chasing spec-sheet extras. I'd do that before spending real money. On “single clunk over small sharp bumps,” that was the fork that mattered for me. Was this after sitting overnight? I'd rather look cautious in this thread than stuck later.
TorqueFan150Community StarterCommunity StarterFeb 20, 2026permalink
Quick add on that: A second data point from another 2018 Honda Civic owner helps more than a generic diagnosis. That's where I'd start. Run the total, not the monthly, before you commit. I'd rather be boring and correct. If this is nothing, great. I want that in data.
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