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Broken radiator cap, can I drive my car with a small part of the radiator cap in the tank?

Tiny
SHEHAK SHAH
  • MEMBER
  • 2013 HONDA CIVIC
  • 1.8L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 115,000 MILES
Hello,

Yesterday I travelled on motorway for approximately 400km and the next day I checked the coolant level it was full but my radiator cap was broken from inside. As I lifted it out the spring was resting in the upper tank which I took it out with a tweezer, but the little plastic thing in the inside of the cap is still inside the cap. What should I do?
I have replaced the cap with a new one. Can I drive my car to the mechanic with that small part of the previous radiator cap in my tank or not?
What should I do? Need help.
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Wednesday, June 21st, 2023 AT 7:56 AM

5 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
You should be able to remove the seal part of the old cap, I would not drive it because the system could overheat. Use a pair of needle nose pliers and a small flat blade screwdriver should do the trick. Let us know what happens and please upload pictures or videos of the problem so we can see what's going on.
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Wednesday, June 21st, 2023 AT 12:36 PM
Tiny
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But the issue is that I can't find it?
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Wednesday, June 21st, 2023 AT 8:40 PM
Tiny
KEN L
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Can you upload an image of what you are seeing please?
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Friday, June 23rd, 2023 AT 10:09 AM
Tiny
SHEHAK SHAH
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I can't find It Sir.
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Friday, June 23rd, 2023 AT 12:14 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
Okay, then it sounds like you can just get a new cap, can you take an image of where the radiator cap goes?
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Saturday, June 24th, 2023 AT 10:57 AM

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