Homepage Garage Wiki Register Members List Social Groups Calendar Search Today's Posts Mark Forums Read
#Camaro6
Go Back   CAMARO6 > CAMARO6.com General Forums > ZL1 Discussions


Anderson Composites


Post Reply
 
Thread Tools
Old 04-10-2018, 03:46 PM   #1
Ironman24
 
Ironman24's Avatar
 
Drives: 17 ABM ZL1 M6
Join Date: Jul 2017
Location: Hillsborough, NC
Posts: 12
"marbles in a can" supercharger rattle

Anyone experiencing this on the ZL1 yet? I have a rattle or knocking noise coming from the supercharger lid area at idle and it has gotten bad enough I can hear it in the car now.

I took the car to one dealer and of course I received the "that's normal" statement. I have researched TSBs and I don't believe that it is the belt tensioner issue common on the CTS-V. Several ZL1 owners listened to it this past weekend and agreed that the noise is not normal at all. I listened to the fuel lines and the one at the rear of the drivers side valve cover has a lot of racket with a stethoscope. Wondering if it is the check valve issue in the fuel line that was an issue on the LT4 ZO6?

Just uploaded a video...

Ironman24 is offline   Reply With Quote
Old 04-10-2018, 03:56 PM   #2
Boost or bust
 
Drives: 2018 ZL1 M6
Join Date: Dec 2017
Location: CA
Posts: 224
From what I can hear in the video, it sounds like normal fuel injector operation.
Boost or bust is offline   Reply With Quote
Old 04-10-2018, 05:45 PM   #3
Harry76
 
Harry76's Avatar
 
Drives: 2018 ZL1 A10 Nightfall Gray
Join Date: Apr 2016
Location: Greensburg Indiana
Posts: 67
It could be supercharger bearings, I would pull the belt off and spin it by hand.

If your warranty is still good be a little more persistent with the dealer.
Harry76 is offline   Reply With Quote
Old 04-10-2018, 06:28 PM   #4
brettman

 
brettman's Avatar
 
Drives: 2016 Camaro SS
Join Date: Mar 2017
Location: Cleveland, Ohio
Posts: 913
I have the same thing with my Whipple. As do other SC people.
I went round an round with Whipple, Cause when I installed it it wasn't there.
TIP: close the hood!
__________________
2016 Camaro 1SS, Red Hot, K&N Blackhawk intake, Whipple Supercharger, 3.125 pulley, Kooks 2" long tube headers, High flow cats, secondary cats delete, Mishimoto catch can, P3gauge, Lots of dress-up crap that don't make it go any faster.

Car Journal http://www.camaro6.com/forums/showthread.php?t=490975

SC build http://www.camaro6.com/forums/showthread.php?t=492656

Drive, Ride, Fly It Like You Stole It

GO BIG OR GO HOME
brettman is offline   Reply With Quote
Old 04-10-2018, 09:52 PM   #5
17CamaroZL1
Life's Short, Live Fast!
 
17CamaroZL1's Avatar
 
Drives: 2017 Hyper Blue A10 ZL1
Join Date: Nov 2016
Location: London, KY
Posts: 1,572
First I've heard of that. Definitely doesn't sound normal. It's hard to tell from the video, but it almost sounds like it could even be in the valve train instead of the supercharger. Lifters? Hope you get to the bottom of it, whatever it is.
__________________
Life's Short, Live Fast! https://youtu.be/rTUv2p4T7OA 10.94 at 128 mph, 11.13 at 127mph 870 DA, https://youtu.be/e_X_LcpFp50 11.19 at 127mph 1100 DA, https://youtu.be/OXQiCQdQuH4 11.40 at 125mph 1800 DA
https://youtu.be/uWba1qs8M6Q 11.52 at 123mph 3500 DA
TZQPHG '17 ZL1 HBM|A10|Nav|PDR|CFW Hood|ZL1 Mats

12/26/2016 Ordered!
2/8/2017 Built!!
3/2/2017 Brought Home!!!
17CamaroZL1 is offline   Reply With Quote
Old 04-11-2018, 12:09 AM   #6
hawk02
Coupe Newbie
 
hawk02's Avatar
 
Drives: 2017 Mosaic Black Metallic ZL1
Join Date: Jul 2011
Location: Columbus, Ohio
Posts: 1,985
Quote:
Originally Posted by Ironman24 View Post
Anyone experiencing this on the ZL1 yet? I have a rattle or knocking noise coming from the supercharger lid area at idle and it has gotten bad enough I can hear it in the car now.

I took the car to one dealer and of course I received the "that's normal" statement. I have researched TSBs and I don't believe that it is the belt tensioner issue common on the CTS-V. Several ZL1 owners listened to it this past weekend and agreed that the noise is not normal at all. I listened to the fuel lines and the one at the rear of the drivers side valve cover has a lot of racket with a stethoscope. Wondering if it is the check valve issue in the fuel line that was an issue on the LT4 ZO6?
The 2016-2017 LT1 and LT4 Camaros are also included in the fuel line check valve service bulletin.

http://www.corvetteactioncenter.com/...2017-1338.html
__________________
hawk02 is offline   Reply With Quote
Old 04-11-2018, 07:33 AM   #7
hashtag
 
hashtag's Avatar
 
Drives: 2018 ZL1 A10 Red-Hot
Join Date: Jan 2017
Location: Dublin CA
Posts: 316
It would be normal if your ZL1 was cammed WTH
__________________
2018 ZL1 "Red Hot" A10 w/ PDR, Nav, Carbon Fiber Hood insert, Premium Floormat option. Tony M T-Body & Roto Fab “CAI” modication 🤙
hashtag is offline   Reply With Quote
Old 04-11-2018, 07:56 AM   #8
Ironman24
 
Ironman24's Avatar
 
Drives: 17 ABM ZL1 M6
Join Date: Jul 2017
Location: Hillsborough, NC
Posts: 12
Quote:
Originally Posted by hashtag View Post
It would be normal if your ZL1 was cammed WTH
Yeah I agree, like stated above when I first heard it I thought lifter noise as well because it does sound similar. Any light throttle will quiet it down so the noise does not increase with RPM. So still leaning towards the fuel line check valve or a bearing. Someone also said the lash in the gears could be off. Either way you can't just close the hood and quiet it down, it is easily heard in the cabin now with the windows up.

I will pull the belt and spin it by hand and see what that yields. I have a contact at a different dealer, waiting to hear back before I take it in and get another "that's normal" statement.
Ironman24 is offline   Reply With Quote
Old 04-11-2018, 09:15 AM   #9
7WSM
 
7WSM's Avatar
 
Drives: 2017 ZL1 A10
Join Date: Nov 2009
Location: Pearland, TX
Posts: 344
Have you compared it to another vehicle/engine? It's really hard to tell in the video if that's going to be abnormal or not. I have had multiple people send me videos of noises in their engines while it was perfectly normal. Recording from phones will amplify the sounds coming from the engine.
7WSM is offline   Reply With Quote
Old 04-11-2018, 11:38 AM   #10
hashtag
 
hashtag's Avatar
 
Drives: 2018 ZL1 A10 Red-Hot
Join Date: Jan 2017
Location: Dublin CA
Posts: 316
Quote:
Originally Posted by 7WSM View Post
Have you compared it to another vehicle/engine? It's really hard to tell in the video if that's going to be abnormal or not. I have had multiple people send me videos of noises in their engines while it was perfectly normal. Recording from phones will amplify the sounds coming from the engine.
I have owned (3) ZL1’s. 17,18ZL1 & now a 18 A10. This is absolutely not normal even for a coldstart.
__________________
2018 ZL1 "Red Hot" A10 w/ PDR, Nav, Carbon Fiber Hood insert, Premium Floormat option. Tony M T-Body & Roto Fab “CAI” modication 🤙
hashtag is offline   Reply With Quote
Old 04-11-2018, 11:49 AM   #11
7WSM
 
7WSM's Avatar
 
Drives: 2017 ZL1 A10
Join Date: Nov 2009
Location: Pearland, TX
Posts: 344
Quote:
Originally Posted by hashtag View Post
I have owned (3) ZL1’s. 17,18ZL1 & now a 18 A10. This is absolutely not normal even for a coldstart.
I have probably seen a lot more LT4s then most people on here. Not saying that it's normal or not, but basing noises off a video without having anything else to compare it to is really hard to tell if there is a problem or not. These engines are very sensitive in terms of misfiring or any kind of knocking noises.
7WSM is offline   Reply With Quote
Old 04-11-2018, 01:57 PM   #12
hashtag
 
hashtag's Avatar
 
Drives: 2018 ZL1 A10 Red-Hot
Join Date: Jan 2017
Location: Dublin CA
Posts: 316
Quote:
Originally Posted by 7WSM View Post
I have probably seen a lot more LT4s then most people on here. Not saying that it's normal or not, but basing noises off a video without having anything else to compare it to is really hard to tell if there is a problem or not. These engines are very sensitive in terms of misfiring or any kind of knocking noises.
Agreed & misfiring or kncking is out of the normal. LT4’s motors are not known to be problematic within service as I rarely see them at work. We are a very large Auto Group. If the dealer Service Manager does not do anything I would write GM Corportare & if that recourse fails then get legalrepresentation. Lemon Law Lawyer would be the most viable course of action. I personally have been through it & the approach was successful.
__________________
2018 ZL1 "Red Hot" A10 w/ PDR, Nav, Carbon Fiber Hood insert, Premium Floormat option. Tony M T-Body & Roto Fab “CAI” modication 🤙
hashtag is offline   Reply With Quote
Old 04-11-2018, 04:36 PM   #13
Ironman24
 
Ironman24's Avatar
 
Drives: 17 ABM ZL1 M6
Join Date: Jul 2017
Location: Hillsborough, NC
Posts: 12
Quote:
Originally Posted by 7WSM View Post
I have probably seen a lot more LT4s then most people on here. Not saying that it's normal or not, but basing noises off a video without having anything else to compare it to is really hard to tell if there is a problem or not. These engines are very sensitive in terms of misfiring or any kind of knocking noises.
Yes the video is not the best for trying to hear the rattle. It is much more pronounced and louder in person. The car runs fine so I hope it is not an internal engine issue. I have almost 10K on the car and I know for sure that rattle was not there for a long time and has shown up recently.

I spent this past weekend with a local ZL1 club, had another 6th gen right beside me at the car show, also rode in a ZL1 1LE. None of the other cars had this noise and they all agreed it wasn't normal. I also had a couple of Z06 owners listen to the car as well and got the same feedback so I know it's not just me.
Ironman24 is offline   Reply With Quote
 
Post Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 02:46 PM.


Powered by vBulletin® Version 3.8.9 Beta 4
Copyright ©2000 - 2018, vBulletin Solutions, Inc.