White smoke coming from tail pipe exhaust?

2002 NISSAN ALTIMA
210,000 MILES • 2.5L • 2WD • AUTOMATIC
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DREW CARBAJAL
  • MEMBER
  • 1 POST
I rolled over a high-speed bump in a hotel parking lot and now there's white smoke coming from my tail pipe. I hit it kind of hard. When I run the A/C it tends to smoke the most and I'm not sure why.
Sep 16, 2022 at 4:15 PM
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STRAILER
  • ✓Experienced Mechanic
  • 55,267 POSTS
It sounds like you blew a head gasket which can happen when the engine is jarred, or it was just a coincidence. To be sure let's go over this guide to confirm the failure. If it does have a blown gasket the cylinder head will need to be removed and the gasket replaced, but I have seen people use blue devil which works in some cases.

Here is a video to show you how to use it as well:

https://youtu.be/Xi41RFMP8Ow

and

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

Please go over these guides and report back.
Sep 17, 2022 at 3:39 AM
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