08-25-2009, 09:46 AM | #1 |
Drives: 2010 2SS/Black Join Date: Mar 2009
Location: Tucson, AZ
Posts: 608
|
Valve Noise
At about 1100 miles on the OD I've noticed valve tappet noise when starting my Camaro 2SS A6. It last for a couple of seconds then goes away. I wounder if the AFM in the valve train assembly has any impact? Anyone else experience this?
__________________
2010 Black 2SS L99
Mods: * CAI Intake * Magnuson MP2300 TVS Supercharger/RDS Spacer * Vector Motorsports Tune * Stainless Power LT/Hi Flow Cats/Tru X-* Pipe/36" J-Pipes/40 Series * R1 Concepts ceramic pads and slotted/drilled rotors |
08-25-2009, 11:06 PM | #2 |
not waiting anymore
Drives: vehicles Join Date: Apr 2009
Location: Ottawa,Illinois
Posts: 160
|
My car made the same noise also. (2SS A6) It went away when I changed the oil- if that helps you any...
__________________
2010 Camaros are COOL #NDMPQK ordered 10/15/08 Delivered 6-03-09 VIN 11518
|
08-26-2009, 09:31 AM | #3 |
Drives: 2010 2SS/Black Join Date: Mar 2009
Location: Tucson, AZ
Posts: 608
|
Thanks for the input. I'm changing the oil this weekend.
__________________
2010 Black 2SS L99
Mods: * CAI Intake * Magnuson MP2300 TVS Supercharger/RDS Spacer * Vector Motorsports Tune * Stainless Power LT/Hi Flow Cats/Tru X-* Pipe/36" J-Pipes/40 Series * R1 Concepts ceramic pads and slotted/drilled rotors |
08-27-2009, 01:03 AM | #4 |
Drives: '13 ZL1 #662; '10 SS; '99 SS Join Date: May 2009
Location: Clovis CA
Posts: 457
|
Yeah, I noticed that for the first time today....L99 @ 600 miles. Start up, lasts about a second. I haven't heard that sound in many a year.
__________________
|
08-27-2009, 12:46 PM | #5 |
Drives: Everywhere Join Date: Jun 2008
Location: TX
Posts: 852
|
Probly just dry start but be sure to check your oil filter and the oil catch pan for rocker arm bearings that have fallen apart. I know this has happened to some LS7's.
|
08-27-2009, 01:42 PM | #6 |
Drives: Soon-to-be 1st Gen Join Date: Nov 2008
Location: Southeast
Posts: 249
|
Is GM still assembling engines through a "Net Build" process? I had a Malibu back in 2001 that had "piston slap" due to GM's change from matching pistons to cylinders to the "Net Build" process that assumes all pistons will fit equally into all cylinders. If the noise goes away shortly after start-up (a few seconds to a couple of minutes), then that might be the case as the piston is not as tight in the bore as when the engine is warm. The reason it does not last long is due to the combustion heating up the piston sufficiently to expand it more tightly into the bore. But, this issue has been around for years and not just with GM. Remember, you have explosions occurring inside a sealed environment and lots of metal parts interacting with one another, so there is going to be some noise. Remember solid lifters in an era long ago?
|
08-27-2009, 10:22 PM | #7 |
not waiting anymore
Drives: vehicles Join Date: Apr 2009
Location: Ottawa,Illinois
Posts: 160
|
Yes, it sounds exactly like piston slap. I don't drive the car a lot, so there are some dry starts. That's when I heard it the most; when it sat for a few days before the first oil change.
__________________
2010 Camaros are COOL #NDMPQK ordered 10/15/08 Delivered 6-03-09 VIN 11518
|
08-31-2009, 11:01 PM | #8 |
Drives: 2010 2SS/Black Join Date: Mar 2009
Location: Tucson, AZ
Posts: 608
|
Mines not piston slap, definitely valve tappet noise. Changed oil last week and still have valve tappet when starting for a couple of seconds. This to me is not normal operation. I'll find out when I take it to the dealer when after my list is full.
__________________
2010 Black 2SS L99
Mods: * CAI Intake * Magnuson MP2300 TVS Supercharger/RDS Spacer * Vector Motorsports Tune * Stainless Power LT/Hi Flow Cats/Tru X-* Pipe/36" J-Pipes/40 Series * R1 Concepts ceramic pads and slotted/drilled rotors |
09-02-2009, 04:45 AM | #9 |
Drives: 2010 SS/RS & 2017 SS/RS Join Date: Jan 2009
Location: Bunkie La
Posts: 341
|
Use the lucas gas cleaner
|
|
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
ticking noise and high pitched hum | strshp5 | 5th Gen Camaro SS LS LT General Discussions | 13 | 10-21-2009 04:04 PM |
QC missed something-- AC Compressor making a whining noise under engine load | Kyle.Gilmour | Camaro Issues / Problems | Warranty Discussions | TSB and Recalls | 12 | 10-09-2009 10:42 PM |
ticking noise and high pitched hum | strshp5 | Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons | 5 | 08-10-2009 09:09 AM |
L99 Delete Whats involved? | jsharp | Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons | 59 | 05-26-2009 10:54 PM |
L99 AFM -- It's REALLY a tough choice, for some. Step Inside. | 2KZ28_For_Now | 5th Gen Camaro SS LS LT General Discussions | 128 | 04-03-2009 04:03 PM |