Muffler issue

Tiny
PCULQUI
  • MEMBER
  • 2005 TOYOTA SIENNA
  • 3.3L
  • V6
  • 4WD
  • AUTOMATIC
  • 105,700 MILES
As per the video, the sound just started today in the morning after the vehicle had been parked overnight for about 8-10 hours. When accelerating, there is a loud sound also. Now, after the car warms up, the sound goes down drastically.
By the picture attachment, I believe the sound is coming from the gap in between the muffler and resonator. Now, my question would be, why didn't they just tighten the screws to avoid that sound and what is that putty type element in between the gap.
Image & Video (Click to make bigger)
Thumb
Thumb
Monday, April 20th, 2020 AT 10:15 AM

9 Replies

Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
Yeah. That is an exhaust leak. The gap between the two joints is filled with a gasket. I suspect the gasket/putty now has a void in it and causing the noise. The cause could be because they didn't tighten it enough but it is not uncommon to see a small bit of the gasket.

If you just had someone perform work on this, then I would return it and ask that they use an actual gasket like the one pictured below. They hold up better then the stuff they used.

Let me know if you have questions. Thanks
Images (Click to make bigger)
Thumb
Thumb
Thumb
Was this
answer
helpful?
Yes
No
Monday, April 20th, 2020 AT 10:25 AM
Tiny
PCULQUI
  • MEMBER
  • 354 POSTS
This gasket, do I have to remove the muffler and pipe and all or can it be installed as is without removing anything?
Was this
answer
helpful?
Yes
No
Monday, April 20th, 2020 AT 4:18 PM
Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
Take a look at this attachment. You should be able to remove the two bolts where the gasket is, and then remove the exhaust hanger that I circled and that will allow you to drop the system down enough to remove what is there and put the new gasket on.

If you want to try and tighten it first, that may seal it if they just left it loose. Just worth a try.

Let me know if you have questions. Thanks
Was this
answer
helpful?
Yes
No
Monday, April 20th, 2020 AT 7:19 PM
Tiny
PCULQUI
  • MEMBER
  • 354 POSTS
There was no attachment.
Was this
answer
helpful?
Yes
No
Tuesday, April 21st, 2020 AT 4:13 AM
Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
Sorry. Try it now.
Image (Click to make bigger)
Thumb
Was this
answer
helpful?
Yes
No
Tuesday, April 21st, 2020 AT 9:16 AM
Tiny
PCULQUI
  • MEMBER
  • 354 POSTS
Can I use this gasket instead?
Also, which bolt set-up is preferred and what is the purpose of the spring?
Images (Click to make bigger)
Thumb
Thumb
Thumb
Was this
answer
helpful?
Yes
No
Tuesday, April 21st, 2020 AT 10:08 AM
Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
Sure can. That seal just sits on the inside of the pipe and seals it when it clamped down. Also, the spring is there to absorb the engine pulses coming through the exhaust so that when the exhaust vibrates and moves around the spring tension keeps the seal better.

If you want to use everything you showed, I would go for it.
Was this
answer
helpful?
Yes
No
Tuesday, April 21st, 2020 AT 11:03 AM
Tiny
PCULQUI
  • MEMBER
  • 354 POSTS
The arrangement below has washers only. The other one I had sent has nuts you can tighten up. Which one would be best.
Now the gasket picture you sent me is different than the one below. Which is best since there might be a problem joining the pipes together and the gasket picture you had sent me earlier could serve as a space filler don't know yet.
Images (Click to make bigger)
Thumb
Thumb
Was this
answer
helpful?
Yes
No
Tuesday, April 21st, 2020 AT 1:23 PM
Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
They both accomplish the same thing just different designs. I would go with the exact set up that you attached with the pictures. Use the bolts and springs with that gasket. I am sure doing that will solve this issue for good.
Was this
answer
helpful?
Yes
No
Wednesday, April 22nd, 2020 AT 9:41 AM

Please login or register to post a reply.

Related Muffler Content

VIEW MORE