I have a 2008 Honda Civic and I started hearing a loud exhaust sound when I back up and when it is cold. What could it be?

Asked by Arliss Nov 25, 2013 at 09:37 PM about the 2008 Honda Civic Coupe DX

Question type: Maintenance & Repair

Started making loud sound under the hood almost like an exhaust sound but not sure. It has gotten worse but it is louder backing up and when starting out. It is a manual shift but shifts easy almost sounds and vibrates like an engine mount.

2 Answers

this is going to require an inspection to determine which parts need replacement...engine mounts are a good guess....get a woodblock and floorjack to see how much travel there is in those mounts~ hopefully will NOT be a cracked exhaust manifold~

1 people found this helpful.
445

I was thinking along the lines of an exhaust manifold as well. Might explain why the vehicle is louder while cold and when the engine warms up the expanding metal will close the gap making it sound...well, not as loud. A very common problem is that bolts tend to loosen up over time and the manifold will just loosen from the engine block. When the vehicle has sat for a while and cooled, see if you can find a wrench of the correct size for the bolts and try to tighten them down starting from the center of the manifold and work your way outwards toward the opposite ends. By doing this you might be able to pinch the manifold down a little tighter and eliminate the sound all together. If this doesn't work, I would suspect a crack and that means replacing the manifold. Good luck.

2 people found this helpful.

Your Answer:

CarGurus Experts

  • #1
    deb5deb5deb5deb5deb5
    Reputation
    2,870
  • #2
    kd5qhr
    Reputation
    2,410
  • #3
    geetagunjan
    Reputation
    1,490
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Honda Civic
180 Great Deals out of 3,705 listings starting at $1,995
Used Honda Accord Coupe
4 Great Deals out of 65 listings starting at $3,685
Used Honda Accord
40 Great Deals out of 910 listings starting at $1,599
Used Toyota Corolla
108 Great Deals out of 2,035 listings starting at $2,795
Used Toyota Camry
52 Great Deals out of 985 listings starting at $2,212
Used Ford Mustang
65 Great Deals out of 1,259 listings starting at $4,995
Used Lexus IS
25 Great Deals out of 311 listings starting at $5,900
Used Honda CR-V
103 Great Deals out of 3,896 listings starting at $1,795
Used Dodge Charger
38 Great Deals out of 645 listings starting at $4,888

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. Content will be removed if CarGurus becomes aware that it violates our policies.