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White fumes from exhaust?

Tiny
SHEHAK SHAH
  • MEMBER
  • 2013 HONDA CIVIC
  • 1.8L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 116,000 MILES
Hello, my car's engine oil is totally full and also my coolant in radiator.
Yesterday at night I switched on my phone flash to look into exhaust very precisely I noticed extremely invisible white fumes extremely as they are not there. What is it? Is it the gas fumes?
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Wednesday, July 12th, 2023 AT 6:57 AM

3 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,603 POSTS
Hello,

I am not sure about "I noticed extremely invisible white fumes". Is it steam, does it smell like anything? Can you please shoot a quick video with your phone so I can see? That way I can tell for sure what's going on. You can upload it here with your response.

This guide may help us as well:

https://www.2carpros.com/articles/white-smoke-or-steam-coming-from-the-exhaust-pipe

and

https://www.2carpros.com/articles/head-gasket-blown-test

Please go over this guide and get back to us.
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Thursday, July 13th, 2023 AT 11:10 AM
Tiny
SHEHAK SHAH
  • MEMBER
  • 23 POSTS
One thing I forgot to mention it can only be seen with phone camera with flashlight not with naked eye and smell like Gas.
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Thursday, July 13th, 2023 AT 11:41 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,603 POSTS
Can I ask if this only happens when the engine is cold? If so, this is normal because water vapor is a normal byproduct of the combustion process.
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Friday, July 14th, 2023 AT 8:46 AM

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