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When the muffler heats up it occasional will make a ping sound.

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The muffler has a loose weld on an inner baffle which makes this sound

Posted on Jul 08, 2010

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Posted on Jan 02, 2017

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2 Answers

Have a 2006 titan; noticed excess condensation and some white smoke after it was warm; also went I accelerate it sounds like a "metal rattle"(?) doesn't make that sound when at an idle...any suggestions?...


The condensation and white smoke could just be excess moisture that can build up in the muffler when the vehicles isn't used for a while or has been doing only short runs (less than 25-30 miles).. Keep an eye on the coolant level, and if it stays good then there isn't much to worry form that. As far as the "metal rattle" on acceleration, this could be what is known as "octane ping". It means that the engine is knocking a bit from fuel that isn't giving it enough octane. Cheap gas and occasional blending errors can cause this. Try running a tankful of mid-grade fuel next time. IF the noise goes away, you've found the culprit. Octane ping doesn't really hurt the engine, but it is annoying. You may be able to still use regular grade fuel, but might have to change the brand to find one that the truck likes better.

Mar 22, 2015 | 2006 Nissan Titan

1 Answer

Thank you I will check dose items , an other question I have is there is a knock ( Ping ) sound each time I press the gas to go faster and under the speed 30 MPH it smooth the sound down.?


You need a professional to road test it
with a scan tool, to look a data & go from there

Visual Checks you do, are of no value

Have to be aware of Preventative Maintenance
& component test to find a problem

Nov 24, 2014 | Cars & Trucks

1 Answer

Sounds like an aluminum can is rattling in the muffler?


Probably the aluminum heat shield between the muffler and the floor pan is rattling. Against something. Easy fix at muffler shop, should cost less than $50 to repair.

Mar 31, 2014 | 2000 Honda Accord

1 Answer

Changed ****** fluid and filter, now theres a noise in the front, a grinding type sound. when the cars been in use for a while, it idles fine. whats the problem?


Many people experience an occasional ringing (or roaring, hissing, buzzing, or tinkling) in their ears. The sound usually lasts only a few minutes. Ringing in the ears that does not get better or go away is called tinnitus.----------------------------------------------------------------------------
New UPA USB Programmer

Apr 20, 2013 | 2001 Chevrolet Cavalier

1 Answer

Glowing Converter/ Muffler Noise/ Power Loss


your cat is plugged remove it and replace with straight pipe or replace cat

Apr 05, 2017 | 1994 Chevrolet Camaro

1 Answer

2010 Intrepid leaking fluid (not oil) from rear end coming from above the muffler inner side?


First thing I would do is make sure that the fluid you are seeing is not brake fluid but I suspect you would notice a spongy brake pedal. If not then it sounds like what you are seeing is probably water leaking out of the weep hole in the muffler. Modern day catalytic convertors are designed to reduce the emissions coming from the engine into carbon dioxide and water before it leaves the tail pipe. Occasionally this water will condense inside the muffler and leak out of the weep hole. What you are witnessing is most likely normal operation for the vehicle.

Mar 21, 2011 | Dodge Intrepid Cars & Trucks

1 Answer

Vibrating noise coming from the muffler. It seems like there is a loose part, but I have examined and found nothing. Any suggestions would be greatly appreciated.


If it sounds "tinny" it is most likely the muffler heat shield. Check the exhaust and muffler clearance to all heat shields to make sure there is at least a 1 inch clearance between the components. Make sure no hangers are broken that would allow the exhaust to move about.
good luck

Jun 22, 2010 | 2004 Jeep Grand Cherokee

2 Answers

When running metalic vibrating sound from muffler


Hi there
Just take it into the exhaust people and tell them that you need a new muffler ONLY. welded into the place of old one as all your problem is the BAFFEL plates have come loose and the welding is only spot welded and isent any good So a new muffler is ALL YOU WANT
Ron

Nov 08, 2009 | 2002 Ford F150 Regular Cab

2 Answers

04 Endeavor rattling noise


I had the same problem! I crawled underneath the car and discovered that a heat shield on the exhaust header pipe was corroded and rattling against the exhaust pipe. (Before the muffler)
I removed the portion and clamps and solved the problem. Give it a try.

Jun 19, 2008 | 2004 Mitsubishi Endeavor

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