Nicked rubber seal or broke a clip during DIY car repair
Non-mechanic car owners attempting DIY part replacements often accidentally nick rubber seals or snap plastic connectors during the process. This leads to anxiety over whether the accidental damage creates a major new repair job or if it can be easily fixed.
What the numbers show
Counted from the threads quoted below. How we count
- The most recent one is from October 2026.
- This comes up 8.1× more often in r/MechanicAdvice than across the site as a whole.
What people tried
Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.
Found another way around this?
Share your steps and trade-offs so fellow engineers don't have to reinvent the wheel. No account required.
- 1leaving the damaged part installed while monitoring vehicle performanceDid this help you?
- 2waiting for a scheduled professional garage visit to properly diagnose and fix the issueDid this help you?
- 3Finding an old motor to take replacement rods from or buying a new motor entirely.Did this help you?
- 4Run it if the drive shaft is good and the seal your goodDid this help you?
- 5making a custom replacement metal piece without weldingDid this help you?
- 6buying a new compression cageDid this help you?
- 7Searching for cheaper replacement parts on eBayDid this help you?
- 8Proceeding without replacing the broken part while hoping it won't affect functionalityDid this help you?
- 9Putting a washer under the nut to help distribute the loadDid this help you?
- 10Flattening the surface further down with a metal fileDid this help you?
- 11Replacing the steering knuckle entirelyDid this help you?
- 12Monitoring the part frequently after installationDid this help you?
- 13Driving the car with a damaged knuckleDid this help you?
- 14Replacing the knuckle with a new or used partDid this help you?
- 15Watching instructional YouTube videosDid this help you?
- 16Asking for advice on online forumsDid this help you?
- 17Renting or buying specialized tools like torque wrenchesDid this help you?
- 18Purchasing an OEM replacement part online to install themselves.Did this help you?
- 19Hiring a professional technician to navigate the warranty process and install the part.Did this help you?
In their words
Unedited, grouped by where they were said, most upvoted first within each place, each linked to the thread it came from.
“I had to cut out the ball joint nut after fighting with it for half a day (was still original surprisingly). Unfortunately, I think I messed up because I accidentally shaved off a bit of knuckle material from where the nut goes.”source ↗
“But when I torqued everything to spec I noticed it’s actually touching only more or less 2/3rds of the surface of the steering knuckle.”source ↗
“Do I need to get a replacement knuckle? It’s not that expensive but is going to be pain in the ass to replace considering how bad the ball joint nut was…”source ↗
“Decided to buy a replacement evap valve to fix it (only to find out that the previous one was stil working as i couldn't blow through it).”source ↗
“Threw the new valve on there regardless but noticed i have nicked it as seen in the image.”source ↗
“I never work on cars as i am not a mechanic i went into this knowing full well isues could happen.”source ↗
“I’m assuming that hole isn’t supposed to be there. Are there any cheap repairs or do I just need a new tail shaft housing”source ↗
“I got it off, but I snapped the fucking bar that connects the top 2 rods.”source ↗
“I don't want to buy a new compression cage because it's kind of expensive. Is there any way I can salvage this or put it back together with the break?”source ↗
“My last repair I changed my struts and I didn't realize my CV axle also became dislodged, which ended up costing a bit extra in repairs.”source ↗
“My concern as a do-it-yourselfer is not knowing about some hidden dangers or tips to ensure my install goes correctly.”source ↗
“I'm wrestling with paranoia against Murphy's Law so any advice is appreciated.”source ↗
“Tried to do the same and snapped these guys off (the second one was because I am stupid).”source ↗
“Is this easily fixable, or did I create a big repair job?”source ↗
“Got the motor out, it won't pop out of the casing. I give it a little strength and pop it out to find that a piece of the electronics board is glued to the casing and I've now broken it.”source ↗
“At the very least I think I need to buy a new motor, at the worst I have to buy a new head unit.”source ↗
“What do I need to consider about this mess? Do I really need to bring my HVAC guy in?”source ↗
“Tried cutting the front bearing outer ring with a torch. Got that done, but upon removing it, I found out I made a nice crater in the knuckle.”source ↗
“I'd still rather not pay for it if I don't have to. With tools and testing equipment it's already became more expensive than I planned for.”source ↗
“I just don't want it expanding and contracting in a way it shouldn't and destroying the battery life.”source ↗
Where this came up
People with this problem also raised
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