Sounds sortof like an exhaust leak...but?? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

f5journal · 04-11-2011, 10:01 AM

Anyone else have a slight exhaust leak noise from the passenger side of the motor?

This only happens when the engine is very well warmed up and under a load/accelerating. It's sort of a flapping sound/ deck of cards thumb shuffle

I see no evidence of a leak and suspect it may be something normal that I am simply unaware of.

It started at about 1000 miles and I have 5000 now.

JLE58 · 04-11-2011, 10:52 AM

Do you have headers?

pyr0b0y · 04-11-2011, 10:55 AM

f5journal · 04-11-2011, 11:17 AM

Totally stock. I've been waiting to go to the dealer until I have at least a couple issues to address.

The sound I'm asking about seems to start when you get to 2800-3500 rpm under a load. It's not there under simple driving around town

canadian ss · 04-11-2011, 12:49 PM

check the manifold bolts if they are missing the heads.(broken)

JLE58 · 04-17-2011, 11:38 AM

I would say you have a leak somewhere. They are hard to find sometimes. The valve train on these cars are somewhat loud just like most every other LS and late model Gm motor long tube headers will really magnify the sound but since you do not have them i would just take it to the dealer and tell them to fix it riding around with leak will only make it worse if thats what it is. Maybe you can post a video that would help.

f5journal · 04-18-2011, 08:30 AM

I'm taking it to the dealer. I has to be a leak. I had George at MGW install a shifter Friday and the minor jostling of the transmission and engine made it slightly worse. So it has to be a leak

Muck_Fustangs · 04-18-2011, 08:48 AM

if its stock... let the dealer handle it eyes closed...

DVAS · 05-09-2011, 06:55 PM

Quote:

Originally Posted by f5journal

Totally stock. I've been waiting to go to the dealer until I have at least a couple issues to address.

The sound I'm asking about seems to start when you get to 2800-3500 rpm under a load. It's not there under simple driving around town

Any news on this? I am taking mine to dealer for the new exhaust on my 2011 ss manual, but not totlaly sold it is the issue until it quites up after service... So paranoid

Thanks

f5journal · 05-10-2011, 07:39 AM

Nothing yet...have not been to dealer. It's not at the engine to manifold and I checked the manifold to pipe joint..that is tight also

nancygrl · 05-10-2011, 08:16 AM

I started to notice a similar sound (does sound like cards shuffling) same RPM range and while accelerating. Please post when you get it figured out.

Grandeos · 05-13-2011, 08:53 AM

Sounds to me like the same problem I had on my 2LT, and now also on my 2SS. Is it a "rustling" noise??? Sounds like its coming from the passenger floor board under 3k+ acceleration???

If so, then its the heater core inlet valve that needs to be replaced. I had this done on my 2LT, and will be taking my new 2SS in soon for the same exact noise. There is a TSB for this issue.

DVAS · 05-18-2011, 03:22 PM

Quote:

Originally Posted by Grandeos

Sounds to me like the same problem I had on my 2LT, and now also on my 2SS. Is it a "rustling" noise??? Sounds like its coming from the passenger floor board under 3k+ acceleration???

If so, then its the heater core inlet valve that needs to be replaced. I had this done on my 2LT, and will be taking my new 2SS in soon for the same exact noise. There is a TSB for this issue.

Any updates?

FLYBOY · 05-20-2011, 11:19 AM

I have this exact noise also. Mine crops up above 3k RPM all the way through the power band coming from what seems like the passenger floorboard or low passenger firewall area. I'm thinking it's either a leak or a loose shield. I have a hard time thinking it's the heater core, doesn't sound like fluid it's more of a small metallic clank. At first I thought it was bad gas and I was experiencing preignition, however, I have used nothing but 91 octane and have done several fuse pulls...I'm curious if anybody has solved this problem yet?

04-11-2011, 10:01 AM	#1
f5journal Senior Camaro Fanatic Drives: 2011 SS/RS manual - White Join Date: Aug 2010 Location: aiken, sc Posts: 1,980	Sounds sortof like an exhaust leak...but?? Anyone else have a slight exhaust leak noise from the passenger side of the motor? This only happens when the engine is very well warmed up and under a load/accelerating. It's sort of a flapping sound/ deck of cards thumb shuffle I see no evidence of a leak and suspect it may be something normal that I am simply unaware of. It started at about 1000 miles and I have 5000 now. Last edited by f5journal; 04-11-2011 at 11:17 AM.

04-11-2011, 10:55 AM	#3
pyr0b0y need....more....hp Drives: The Neighbor Hater Join Date: Dec 2010 Location: San Mateo, CA Posts: 4,091	__________________ BUILD THREAD BUILT AND MAINTAINED BY BLU808 Mast Motorsports Built LS3 Stroker 418, IPS GT35R Twin Turbos, Exedy GTO4XD Twin Disc Clutch, Aeromotive A1000 Eliminator Stealth Fuel Pump, AEM Meth Injection, DSS 1400hp Axels, BC Coilovers, Pfadt & BMR Suspension, Hawk HPS Pads, Drilled/Slotted Rotors, Hurst Shifter, Custom Roll Cage by Blu808, T3 Ports, 22" Custom Concave Mesh Rims

04-18-2011, 08:48 AM	#8
Muck_Fustangs Drives: 2011 Chevrolet Camaro Join Date: Mar 2011 Location: Alabama Posts: 135 View My Garage	if its stock... let the dealer handle it eyes closed... __________________ www.speedsouth.com

05-13-2011, 08:53 AM	#12
Grandeos Automotive Designer Drives: 2011 Camaro 2SS/RS (LS3) Join Date: Jul 2009 Location: Detroit, MI Posts: 832	Sounds to me like the same problem I had on my 2LT, and now also on my 2SS. Is it a "rustling" noise??? Sounds like its coming from the passenger floor board under 3k+ acceleration??? If so, then its the heater core inlet valve that needs to be replaced. I had this done on my 2LT, and will be taking my new 2SS in soon for the same exact noise. There is a TSB for this issue. __________________ 2011 Camaro 2SS/RS LS3 (SIM/BLK)

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04-11-2011, 10:52 AM	#2
JLE58 Drives: CGM,twin turbo, cam 2010 SS/RS Join Date: Mar 2011 Location: ROCKMART, GA Posts: 2,185	Do you have headers?

04-11-2011, 11:17 AM	#4
f5journal Senior Camaro Fanatic Drives: 2011 SS/RS manual - White Join Date: Aug 2010 Location: aiken, sc Posts: 1,980	Totally stock. I've been waiting to go to the dealer until I have at least a couple issues to address. The sound I'm asking about seems to start when you get to 2800-3500 rpm under a load. It's not there under simple driving around town

04-11-2011, 12:49 PM	#5
canadian ss Psycho on day pass Drives: 2010 yellow 1ss m6 -GM tech Join Date: Apr 2009 Location: grimsby, ont. Posts: 487 View My Garage	check the manifold bolts if they are missing the heads.(broken)

04-17-2011, 11:38 AM	#6
JLE58 Drives: CGM,twin turbo, cam 2010 SS/RS Join Date: Mar 2011 Location: ROCKMART, GA Posts: 2,185	I would say you have a leak somewhere. They are hard to find sometimes. The valve train on these cars are somewhat loud just like most every other LS and late model Gm motor long tube headers will really magnify the sound but since you do not have them i would just take it to the dealer and tell them to fix it riding around with leak will only make it worse if thats what it is. Maybe you can post a video that would help.

04-18-2011, 08:30 AM	#7
f5journal Senior Camaro Fanatic Drives: 2011 SS/RS manual - White Join Date: Aug 2010 Location: aiken, sc Posts: 1,980	I'm taking it to the dealer. I has to be a leak. I had George at MGW install a shifter Friday and the minor jostling of the transmission and engine made it slightly worse. So it has to be a leak

05-10-2011, 07:39 AM	#10
f5journal Senior Camaro Fanatic Drives: 2011 SS/RS manual - White Join Date: Aug 2010 Location: aiken, sc Posts: 1,980	Nothing yet...have not been to dealer. It's not at the engine to manifold and I checked the manifold to pipe joint..that is tight also

05-10-2011, 08:16 AM	#11
nancygrl 雪の玉 Drives: '22 Z71 RST Silverado Join Date: Feb 2011 Location: South Posts: 3,415	I started to notice a similar sound (does sound like cards shuffling) same RPM range and while accelerating. Please post when you get it figured out.

05-20-2011, 11:19 AM	#14
FLYBOY Drives: Black 2010 2SS/RS A6 Join Date: Aug 2010 Location: Kansas Posts: 87	I have this exact noise also. Mine crops up above 3k RPM all the way through the power band coming from what seems like the passenger floorboard or low passenger firewall area. I'm thinking it's either a leak or a loose shield. I have a hard time thinking it's the heater core, doesn't sound like fluid it's more of a small metallic clank. At first I thought it was bad gas and I was experiencing preignition, however, I have used nothing but 91 octane and have done several fuse pulls...I'm curious if anybody has solved this problem yet?