Tapping / Popping sound coming from underneath the car

5

Asked by Mar 22, 2016 at 03:23 PM about the 2013 Kia Optima LX

Question type: Maintenance & Repair

I just purchased a 2013 Kia Optima 4 cylinder. After I shut the engine off
there is a light tapping / clicking sound that comes from underneath the car
(exhaust pipe maybe?). It sounds like someone is very lightly tapping metal
with a small wrench, and sometimes sounds like popcorn popping
(inconsistent, burst of pops then none, then two or three, etc.)  The tapping
now occurs with the engine running. Any idea what this might be? I don't
think it's coming from the engine (valves, etc.) as I've heard that before and
it's not the same sound. Thanks, John

2 Answers

70

It'll likely be just the exhaust expanding when hot and contracting as it's cooling. Even while running since the temp changes constantly with different rpms. The different metals, muffler, cat and pipes will not be of all the same materials.

10

The popping sound that you hear is from the purge leak valve which they say is normal for KIA Soento. I don't buy it. They dont recommend replacing it coz the check engine light doesn't turn on. I wonder if replace will take care of the sound.

1 of 1 people found this helpful.

Your Answer

Kia Optima Experts

  • #1
    Tom Demyan
    Reputation
    1,080
  • #2
    kc07kia
    Reputation
    460
  • #3
    James Warner
    Reputation
    430
View All

Related Models For Sale

Used Honda Accord
859 Great Deals out of 79,206 listings starting at $1,444
Used Hyundai Sonata
763 Great Deals out of 53,229 listings starting at $1,499
Used Toyota Camry
1,083 Great Deals out of 76,315 listings starting at $1,400
Used Nissan Altima
1,172 Great Deals out of 74,895 listings starting at $900
Used Chevrolet Malibu
1,057 Great Deals out of 57,042 listings starting at $995
Used Ford Fusion
1,040 Great Deals out of 61,764 listings starting at $888
Used Honda Civic
696 Great Deals out of 53,263 listings starting at $1,495
Used Nissan Maxima
340 Great Deals out of 20,724 listings starting at $1,175
Used Dodge Charger
430 Great Deals out of 35,016 listings starting at $2,000
Used Hyundai Elantra
600 Great Deals out of 45,304 listings starting at $1,500
Used Chevrolet Impala
534 Great Deals out of 33,171 listings starting at $1,495
Used Kia Sorento
460 Great Deals out of 32,778 listings starting at $1,950
Used Mazda MAZDA6
167 Great Deals out of 11,875 listings starting at $1,500
Used Kia Forte
152 Great Deals out of 18,432 listings starting at $2,450
Used Toyota Corolla
886 Great Deals out of 65,500 listings starting at $1,250

Used Cars For Sale

2018 Kia Optima LX For Sale
4 Great Deals out of 6,257 listings starting at $13,995
2017 Kia Optima LX For Sale
84 Great Deals out of 2,084 listings starting at $13,000
2016 Kia Optima LX For Sale
12 Great Deals out of 1,316 listings starting at $9,287
2015 Kia Optima LX For Sale
112 Great Deals out of 2,678 listings starting at $7,991
2014 Kia Optima LX For Sale
21 Great Deals out of 659 listings starting at $6,999

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.