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Exhaust noise

Tiny
REAGAN SMITH
  • MEMBER
  • 1993 HONDA CIVIC
  • 1.5L
  • 4 CYL
  • 2WD
  • MANUAL
  • 125 MILES
My car has a hks muffler (aftermarket) and usually has a nice deep tone, and rather loud. However, after not driving the car for two days, upon driving it again I noticed the exhaust was much more quiet and did not have that deep tone that it had before (basically noticeably much more quiet than before). I do not have poor MPG, or any acceleration/power problems so I am unsure of why this has happened.
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Wednesday, September 6th, 2017 AT 3:09 AM

3 Replies

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
A baffle in the muffler may have dislodged, often if you give the muffler a sharp thump with the palm of your hand, (cold exhaust) you may hear it vibrate or knock internally.
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Wednesday, September 6th, 2017 AT 3:46 AM
Tiny
REAGAN SMITH
  • MEMBER
  • 2 POSTS
I have tried this, no vibrations or knocks.
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Wednesday, September 6th, 2017 AT 2:53 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 43,338 POSTS
Sometimes you cannot hear the baffle being loose. I would take it to a muffler shop and let them look at it. It sounds like the muffler is bad.

Please let us know what you find.

Cheers, Ken
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Thursday, September 7th, 2017 AT 10:49 AM

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