leaking O2 sensor l fixed an exhaust leak on the “ribs” on the manifold on my 2006 chrysler 300 crd 3.0 td when checking if the problem was solved l could still smell the exhaust and when holding my fingers loose around the top of the sensor housing where the wiring starts, it felt like the exhaust came out of the housing..
The answer is YES.
Everything in your car can break apart, broken, worn, and damaged.
Even for new parts sometimes you will get a defective item.
For leaking parts, you can check with bubble:
- Use water + detergent (this should be enough for making bubble)
- splash or spray the suspected area or
- use a sponge, dip the sponge into the detergent solution, and use the sponge to check.
Additional information on HOW to spray it or use the sponge for the O2 sensor housing:
- Do not spray it after the engine hot (after running around etc)
- Spray it when the engine is on first turns on / cold start. (meaning when the engine is cool, not cold - cold obviously your engine wouldn't start)
- Use extra precaution to check if glowing red then it's not good
- Use extra precaution
- Do not spray it too much
Another one using vac shop to blow from the exhaust to check without turn on the engine: Youtube Link (i do not recommend this way)