Misfire?
#1
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I’ve been at this problem for months. Car is at a lack of power when accelerating. And the exhaust sputtering idle but only one of the tips. The air coming from the exhaust is like thudding. I’ve changed spark plugs and ignition coils but it still happens. Could it be something with the exhaust system itself?
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Rani Garner (06-14-2022)
#4
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I’ve been at this problem for months. Car is at a lack of power when accelerating. And the exhaust sputtering idle but only one of the tips. The air coming from the exhaust is like thudding. I’ve changed spark plugs and ignition coils but it still happens. Could it be something with the exhaust system itself?
![](https://cimg5.ibsrv.net/gimg/my350z.com-vbulletin/828x1792/b44af4cb_6dd5_4053_9f02_fbb198730300_39927c651a42737a026ad16e66ebbc7d16417efd.png)
Left catalytic converter
![](https://cimg8.ibsrv.net/gimg/my350z.com-vbulletin/828x1792/e5acf5a3_842e_4ccf_b1e5_ddbf00848a63_3c5814103ade991314e8c56877805743d0a0e371.png)
Right catalytic converter. Suspecting it could be this?
#5
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^^^ 1st thing I thought of, how many miles?
Cats aren't hard to do, just hard to get to, you'll need several socket extensions, Liquid Wrench and maybe a cheater bar for leverage. To inspect remove 3 upper fasteners and drop so you view with a flashlight and small mirror. Gl!
Cats aren't hard to do, just hard to get to, you'll need several socket extensions, Liquid Wrench and maybe a cheater bar for leverage. To inspect remove 3 upper fasteners and drop so you view with a flashlight and small mirror. Gl!
#6
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^^^ 1st thing I thought of, how many miles?
Cats aren't hard to do, just hard to get to, you'll need several socket extensions, Liquid Wrench and maybe a cheater bar for leverage. To inspect remove 3 upper fasteners and drop so you view with a flashlight and small mirror. Gl!
Cats aren't hard to do, just hard to get to, you'll need several socket extensions, Liquid Wrench and maybe a cheater bar for leverage. To inspect remove 3 upper fasteners and drop so you view with a flashlight and small mirror. Gl!
#7
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Here's an idea- drop the top, inspect. If there's a brown or grey powdery buildup and you can't see the little squares they're clogged. If not, move on. At that point you remove completely, get the biggest screwdriver you have and a hammer. Either remove 1" off the top or gut completely. Reinstall. 0 cost, just time. It'll likely throw a CEL for cat efficiency so look up the O2 no fouler hack.
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jhc (06-13-2022)
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