Exhaust smells bad.

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Apr 18, 2016 | 06:49 PM

farachi

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Exhaust smells bad.

Hey everyone new to the forum hoping that someone could help me. I took my C5 out the other day for a spin after sitting for a couple of months and noticed that my idle was rough. It felt like my engine was choking and wanted to die. When I got back home I noticed my exhaust had a very rich smell to it. My code shows PO308 (miss fire)? Thank you.

Apr 18, 2016 | 08:02 PM

Hotrod6616

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From: Apopka Florida

Fuel could have gone bad in it, doesn't take long with the ethanol in the gas now to go bad. I would put some fresh gas in it and see if that helps it.

Apr 18, 2016 | 08:50 PM

farachi

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Thank you for responding Hotrod. I thought the same thing and filled up the tank, but nothing has changed after driving for 10 miles. If anything it has gotten worse...

Apr 18, 2016 | 11:00 PM

StingrayRebel

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2020 Corvette of the Year Finalist (performance mods)

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p0308 indicates a misfire on cylinder #8... I would start by checking the plug and wire on the passenger rear cylinder... also make sure the injector and coil connections on that cylinder are good

Apr 19, 2016 | 09:56 AM

3sACROWD

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From: Appleton WI

Another thing to check is make sure you connection from the air filter to intake are sealed. I've had the clamp near the MAF sensor slip off and that will create a rough idle.

Apr 19, 2016 | 08:51 PM

farachi

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Quote:

Originally Posted by neutron82

p0308 indicates a misfire on cylinder #8... I would start by checking the plug and wire on the passenger rear cylinder... also make sure the injector and coil connections on that cylinder are good

Ok, thank you for your help.

Apr 19, 2016 | 08:53 PM

farachi

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Quote:

Originally Posted by 3sACROWD

Another thing to check is make sure you connection from the air filter to intake are sealed. I've had the clamp near the MAF sensor slip off and that will create a rough idle.

Ok, thank you for your time.

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