2018 Camaro Sputtering During Idle. Possible Bad Fuel? Or Something Else? - Page 2

caSStro18 · 12-01-2019, 10:05 PM

Maybe go to the dealership and start up some of the new cars on the lot. They're not 2018's but the new SS's have the same engine. See if the others do it as well. I know mine does not idle smooth as silk. It's not a Honda Accord or a Toyota Camry. As long as you are not feeling any hesitating on acceleration, stalling out, loss of power, and you don't have any check engine lights coming on, I'd say it's probably fine. When I first start mine up and I'm standing behind it I can hear a definite almost misfire sound. It goes away once the engine is at normal operating temperature.

LT4Greg · 12-01-2019, 10:47 PM

I had a slight cam lope in my 2016 SS with the M6 and definitely my LT4 doesn’t have a smooth idle either. It’s the nature of the LT1 and LT4 engines. Don’t think you have anything to be concerned about as long as the car runs good and no CELs pop up! Enjoy the 455 hp and I would put the best gasoline(top tier) of at least 93 octane. I used Shell V-power when I had my SS and alternative between Shell and Chevron in the ZL1. Of course the octane available depends on the region of the USA where you live.

c4racer · 12-02-2019, 12:22 AM

Sure idles smooth and clean compared to my 525hp 406 in the 71!!

Torquem · 12-02-2019, 01:31 PM

Check your wire / coil connections. I had this exact thing happen and it was a loose coil / wire connection on my #6 cylinder. Snugged it up and it has been perfect since.

beworthy3 · 12-02-2019, 02:48 PM

Mine does the same thing, pretty sure its just a little cam shake

beworthy3 · 12-02-2019, 02:51 PM

mine does the same, think its just a little cam shake

pabex · 12-02-2019, 03:00 PM

Quote:

Originally Posted by beworthy3

mine does the same, think its just a little cam shake

could you explain the exact feeling? I might have the same exact thing and is it dangerous? I also noticed today that it was way less when car got warmer compared to cold

beworthy3 · 12-02-2019, 03:09 PM

Quote:

Originally Posted by pabex

could you explain the exact feeling? I might have the same exact thing and is it dangerous? I also noticed today that it was way less when car got warmer compared to cold

it just feels like the car is shaking a very tiny but when idling. It does feel like it could be bad fuel, but its honestly just a side affect of the cam. 100% not dangerous

Need4Camaro · 12-02-2019, 03:25 PM

I personally believe what the OP is posting is normal. What you're describing isn't shaking but vibration feeding into the cabin from the motor rocking against the motor mounts. My car does this as well and I get a good few vibrations during cold morning starts, infact; my car runs pretty sloppy during cold start and seems to be extremely aggressive and just alittle bit (just ALITTLE bit) choppy/rough idle during first cold starts in the morning, ESPECIALLY if its cold outside. It smoothens out within a few minutes and drives normally after that. I don't think there's a problem. Have them scan the ECM, if they pull no codes, its probably running as intended. I don't know what you were driving before but this is a 6.2L 455 HP V8 motor, this isn't a Lexus. No offense intended of course, but I have to set expectations. High Power cars are alot more difficult to keep 'comfortable' in all areas.

pabex · 12-02-2019, 03:30 PM

Quote:

Originally Posted by beworthy3

it just feels like the car is shaking a very tiny but when idling. It does feel like it could be bad fuel, but its honestly just a side affect of the cam. 100% not dangerous

Gotchya, so its like there is a normal idle and you get that jiggles that seems like is coming from the motor here and there. But not always. Am I right?

metalhead79 · 12-02-2019, 03:46 PM

Quote:

Originally Posted by Need4Camaro

I personally believe what the OP is posting is normal. What you're describing isn't shaking but vibration feeding into the cabin from the motor rocking against the motor mounts. My car does this as well and I get a good few vibrations during cold morning starts, infact; my car runs pretty sloppy during cold start and seems to be extremely aggressive and just alittle bit (just ALITTLE bit) choppy/rough idle during first cold starts in the morning, ESPECIALLY if its cold outside. It smoothens out within a few minutes and drives normally after that. I don't think there's a problem. Have them scan the ECM, if they pull no codes, its probably running as intended. I don't know what you were driving before but this is a 6.2L 455 HP V8 motor, this isn't a Lexus. No offense intended of course, but I have to set expectations. High Power cars are alot more difficult to keep 'comfortable' in all areas.

Same here. Runs a bit rough after a cold start until it warms up.

Every V8 equipped pony/muscle car I've ever owned rocked the car a little during idle. It's normal... and awesome.

beworthy3 · 12-02-2019, 03:53 PM

Quote:

Originally Posted by pabex

Gotchya, so its like there is a normal idle and you get that jiggles that seems like is coming from the motor here and there. But not always. Am I right?

Exactly, its way more noticeable on cold starts, but if you are really trying you can feel it even when sitting at a light after driving for awhile

pabex · 12-02-2019, 04:06 PM

Quote:

Originally Posted by beworthy3

Exactly, its way more noticeable on cold starts, but if you are really trying you can feel it even when sitting at a light after driving for awhile

Yes Yes exactly. thank god I am not the only one. So you saying that is normal for our cars? I have noticed something similar in my old bmw and my moms ford focus as well. I just wasnt sure if thats a normal thing or not, since it feels

little bit out of place

LT4Greg · 12-02-2019, 04:09 PM

No it’s normal pabex! It’s an LT1 6.2 liter 455 hp V8 engine! Nothing wrong!��

12-01-2019, 10:47 PM	#16
LT4Greg Drives: 2017 Camaro ZL1 Coupe Join Date: May 2016 Location: Georgia Posts: 5,869	I had a slight cam lope in my 2016 SS with the M6 and definitely my LT4 doesn’t have a smooth idle either. It’s the nature of the LT1 and LT4 engines. Don’t think you have anything to be concerned about as long as the car runs good and no CELs pop up! Enjoy the 455 hp and I would put the best gasoline(top tier) of at least 93 octane. I used Shell V-power when I had my SS and alternative between Shell and Chevron in the ZL1. Of course the octane available depends on the region of the USA where you live. __________________ ZL1 Coupe, PDR, Exposed carbon fiber hood insert, My Link with Nav, M6 6 speed and Silver Ice Metallic. Mods done: ceramic window tint, GM Accessories Camaro floor mats and Roto-Fab CAI.

12-02-2019, 01:31 PM	#18
Torquem Bannable Drives: 2017 Camaro ZL1 Join Date: Oct 2009 Location: Houston, TX Posts: 460 View My Garage	Check your wire / coil connections. I had this exact thing happen and it was a loose coil / wire connection on my #6 cylinder. Snugged it up and it has been perfect since. __________________ One must forego the self to attain total spiritual creaminess, and avoid the chewy chunks of degradation 2017 ZL1 A10 - Hyper Blue Metallic Rotofab CAI, TM ported TB, AWE non res touring catback with PLP's

12-02-2019, 04:09 PM	#28
LT4Greg Drives: 2017 Camaro ZL1 Coupe Join Date: May 2016 Location: Georgia Posts: 5,869	No it’s normal pabex! It’s an LT1 6.2 liter 455 hp V8 engine! Nothing wrong!�� __________________ ZL1 Coupe, PDR, Exposed carbon fiber hood insert, My Link with Nav, M6 6 speed and Silver Ice Metallic. Mods done: ceramic window tint, GM Accessories Camaro floor mats and Roto-Fab CAI.

12-01-2019, 10:05 PM	#15
caSStro18 Drives: 2018 Camaro SS Join Date: Sep 2019 Location: California Posts: 564 View My Garage	Maybe go to the dealership and start up some of the new cars on the lot. They're not 2018's but the new SS's have the same engine. See if the others do it as well. I know mine does not idle smooth as silk. It's not a Honda Accord or a Toyota Camry. As long as you are not feeling any hesitating on acceleration, stalling out, loss of power, and you don't have any check engine lights coming on, I'd say it's probably fine. When I first start mine up and I'm standing behind it I can hear a definite almost misfire sound. It goes away once the engine is at normal operating temperature.

12-02-2019, 12:22 AM	#17
c4racer Drives: 2016 SS Convertible Join Date: Sep 2016 Location: California Posts: 1,108	Sure idles smooth and clean compared to my 525hp 406 in the 71!!

12-02-2019, 02:48 PM	#19
beworthy3 Drives: 2018 Camaro SS 1LE Join Date: Oct 2019 Location: New Jersey Posts: 308	Mine does the same thing, pretty sure its just a little cam shake

12-02-2019, 02:51 PM	#20
beworthy3 Drives: 2018 Camaro SS 1LE Join Date: Oct 2019 Location: New Jersey Posts: 308	mine does the same, think its just a little cam shake

12-02-2019, 03:25 PM	#23
Need4Camaro Drives: '17 Camaro 2SS & '99 Camaro Z28 Join Date: Feb 2014 Location: Austin, TX Posts: 1,972	I personally believe what the OP is posting is normal. What you're describing isn't shaking but vibration feeding into the cabin from the motor rocking against the motor mounts. My car does this as well and I get a good few vibrations during cold morning starts, infact; my car runs pretty sloppy during cold start and seems to be extremely aggressive and just alittle bit (just ALITTLE bit) choppy/rough idle during first cold starts in the morning, ESPECIALLY if its cold outside. It smoothens out within a few minutes and drives normally after that. I don't think there's a problem. Have them scan the ECM, if they pull no codes, its probably running as intended. I don't know what you were driving before but this is a 6.2L 455 HP V8 motor, this isn't a Lexus. No offense intended of course, but I have to set expectations. High Power cars are alot more difficult to keep 'comfortable' in all areas.

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