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Exhaust Noise Coming From Engine. Watch the tach when you hear the noise, and i'll bet it happens at ~1500 rpm. Or it could be due to the normal operation that goes on in the engine.
Exhaust System Basics from www.noahsgarage.com
Mufflers are often found at the end of exhaust pipes, and they can also be called “silencers.”. A hissing noise coming from your can be due to break in the exhaust manifold or pipe, or from a leaky gasket. In addition to the noise, it might be letting exhaust fumes into the car.
It Seems To Be Less Noticeable When The Engine Is Cold, Which Supports A Theory Of Something In The Exhaust System Other Than A Heat Shield.
Sudden loud noise from exhaust/engine. Watch the tach when you hear the noise, and i'll bet it happens at ~1500 rpm. Some exhaust is pushing out with flow of the engine, some is pulling back as it cools and contracts.
When The Engine Is Cold, Condensed Moisture Can Collect In And Around The Exhaust Manifold If There Are Any Leaks Of Coolant From Hoses Or Seals.
One of the first symptoms of a problem with an exhaust manifold gasket is an excessively noisy engine. Engine hesitates, and a popping sound comes from the engine. Hissing noises typically indicate a crack in the exhaust manifold, exhaust pipe or a leaking gasket, while the presence of a chugging noise coming from your exhaust could mean a blockage in the exhaust system.
A Muffler’s Main Purpose Is To Prevent Unwanted Sound Waves From Leaving The Vehicle Through Its Tailpipe.
I found that the lower engine torque strut is the main cause of the noisey rattling going on under there.it is found under the mud/snow shield. A hissing noise coming from your can be due to break in the exhaust manifold or pipe, or from a leaky gasket. If you hear the rattling then it is definitely still in position, but it will.
The Parts And Labor Required For This Service Are.
The sound may be especially pronounced during a cold start or during acceleration. If the noise is coupled by a loss in engine performance, it means that the condition will be closer to the engine as opposed to closer to the muffler. Muffler suppresses the sound coming from the engine.
If The Car Weren't So Quiet Otherwise, I Probably Would Never Have Noticed The Sound.
In addition to the noise, it might be letting exhaust fumes into the car. First, inspect and know what is. If you hear a persistent rattling noise coming from the exhaust area when the engine is running, this is a good indicator that your catalytic converter is failing.
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