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 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 out of 1 people think this is helpful.
155

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.

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

Search Honda Civic Coupe Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Honda Civic Coupe Experts

#1 deb5deb5deb5deb5deb5
deb5deb5deb5deb5deb5
Reputation 1,530
#2 elmerenzo
elmerenzo
Reputation 1,490
#3 kd5qhr
kd5qhr
Reputation 990
View All

Related Models For Sale

Used Honda Civic
936 Great Deals out of 68,320 listings starting at $1,500
Used Honda Accord Coupe
189 Great Deals out of 11,264 listings starting at $2,495
Used Honda Accord
1,081 Great Deals out of 76,805 listings starting at $1,395
Used Toyota Corolla
1,077 Great Deals out of 64,179 listings starting at $1,595
Used Ford Mustang
582 Great Deals out of 41,215 listings starting at $1,699
Used Toyota Camry
1,196 Great Deals out of 93,143 listings starting at $700
Used BMW 3 Series
1,529 Great Deals out of 39,675 listings starting at $1,495
Used Scion tC
145 Great Deals out of 4,346 listings starting at $2,180
Used Acura TL
286 Great Deals out of 7,412 listings starting at $2,650
Used Mazda MAZDA3
397 Great Deals out of 27,738 listings starting at $1,200
Used Nissan Altima Coupe
79 Great Deals out of 1,951 listings starting at $3,777

Used Cars For Sale

2017 Honda Civic Coupe For Sale
5,578 listings starting at $17,509
2016 Honda Civic Coupe For Sale
5 Great Deals out of 5,026 listings starting at $15,995
2015 Honda Civic Coupe For Sale
31 Great Deals out of 665 listings starting at $10,360
2014 Honda Civic Coupe For Sale
28 Great Deals out of 495 listings starting at $10,500
2013 Honda Civic Coupe For Sale
54 Great Deals out of 892 listings starting at $7,900