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11-17-2014, 11:45 AM | #1 |
Drives: 2009 Yaris sedan Join Date: Aug 2014
Location: Halifax, Nova Scotia, Canada
Posts: 10
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Odd exhaust issue
I recently bought a 2009 Yaris sedan which was well optioned and well cared for. About 2 months later, it has developed an exhaust noise. The muffler shop says it's a cracked exhaust manifold. Is this a common problem. The shop says they've never seen it on a Toyota before.
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11-17-2014, 11:48 AM | #2 |
ULTIMATE
Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008
Location: USA, CT
Posts: 13,460
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Cracked ones are very uncommon on our cars, as the OEM manifold is welded tubing, rather than being cast. My bet is that rather than a crack that it is the gasket between the manifold and the mid pipe. That soft metal gasket is a far more common failure point.
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11-17-2014, 12:37 PM | #3 |
Drives: 2009 Yaris sedan Join Date: Aug 2014
Location: Halifax, Nova Scotia, Canada
Posts: 10
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Cool. I knew the Corolla was tubing but just assumed this one was cast since the tech mentioned "cracking".
Typical muffler shop incompetence. |
11-17-2014, 12:51 PM | #4 |
Drives: 2009 5-door, 5-speed Join Date: Sep 2011
Location: White Rock BC
Posts: 687
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It's much less common with steel manifolds, but can still happen. I'm with CTScott though, probably a gasket. If it's a primary exhaust leak (the tubes coming from each port, before the collector) it will sound more like a * tack tack tack* noise. Especially when cold starting. If it's just a steady, louder noise, it's after the collector.
Cheers. |
11-17-2014, 01:09 PM | #5 |
Would it sound like a sorta vacuum leak under load while driving. Ive had something similar but cant find the source
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11-17-2014, 04:53 PM | #6 | |
Drives: 2009 5-door, 5-speed Join Date: Sep 2011
Location: White Rock BC
Posts: 687
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Quote:
Cheers |
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11-17-2014, 05:18 PM | #7 |
Drives: 2007 Yaris 5 door RS Join Date: Nov 2014
Location: Kitchener, ON
Posts: 178
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A broken exhaust manifold / header will make a ticking noise, and you may smell exhaust in the engine bay. Although you may get that (but louder) if the donut is broken.
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