Ticking/Chirping Noise - Lifters? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

HarryNW · 06-15-2017, 11:38 PM

2013 Camaro 2SS/RS, AGP Twin Turbo Kit, Livernois Motorsports L92 Stage 2C Cam.

About 3 weeks ago I started getting a chirping noise. Occurs at all RPMs, decreases a little bit when at temperature, but still there.

The build team and I thought maybe needle bearings from one or more of the rocker arm trunnion bearings OR that there is some kind of bad contact on the rollers. We replaced the rocker arms + trunnions and the issue seemed to disappear temporarily, but after a few runs on the dyno, the sound returned exactly as before. Build team stethoscoped the heads/valvetrain area and it seems to emanate from the passenger rear side.

Video of the Ticking/Chirping here: https://youtu.be/5E3CuR-y7xA

Lifters? Any thoughts?

Moto-Mojo · 06-16-2017, 09:49 AM

Well, I can't say what's wrong but my hearing is not so great and I can hear that on the video without my hearing aids! Hope you and the builders get it figured out.

1Coopgt · 06-16-2017, 12:40 PM

Check all the spark plugs to make sure they are tight . Maybe the idler pulley ? Header leak ?

Jazzzed · 06-16-2017, 08:41 PM

A shot in the dark, but it would seem that the slight improvement at operating temperature would occur due to better oiling of the suspect component. Maybe something in that area of the engine is getting starved of oil.

Also, rhythmically it seems to be too fast to be anything piston related. I do think its probably valve train related.

NC_SS · 06-16-2017, 09:08 PM

Almost sounds like a belt or a pulley to my ear

Most valvetrain related issues I've ever heard were really bad knocking or ticking. That sounds like a bad pulley bearing or something to me

NC_SS · 06-16-2017, 09:09 PM

Just read where your builder said it sounds like it's from the valvetrain

That's a rough sound, good luck OP

Jrichards73 · 06-16-2017, 09:10 PM

Why does it sound like a bad injector noise to me? Like an old toyota camry an ex used to have.

Jazzzed · 06-16-2017, 09:18 PM

Rhythmically once again, it does sound like one chirp per revolution. Lol.

I count around 80 chirps per 10 seconds. So that would be 480 chirps per minute. Ha. I could be off slightly. That tempo is for shredders. But whatever it is that is chirping appears to be happening approx once per revolution.

Don't know if that means anything.

JD555 · 06-17-2017, 07:27 AM

sounds like a belt and pulley issue I chased for a long time. ended up being the pulley on the balancer. It was not on the camaro but my GM truck.

06-15-2017, 11:38 PM	#1
HarryNW HarryNW Drives: 2013 Camaro 2SS RS Black (LS3) Join Date: May 2013 Location: Seattle, WA Posts: 151 View My Garage	Ticking/Chirping Noise - Lifters? 2013 Camaro 2SS/RS, AGP Twin Turbo Kit, Livernois Motorsports L92 Stage 2C Cam. About 3 weeks ago I started getting a chirping noise. Occurs at all RPMs, decreases a little bit when at temperature, but still there. The build team and I thought maybe needle bearings from one or more of the rocker arm trunnion bearings OR that there is some kind of bad contact on the rollers. We replaced the rocker arms + trunnions and the issue seemed to disappear temporarily, but after a few runs on the dyno, the sound returned exactly as before. Build team stethoscoped the heads/valvetrain area and it seems to emanate from the passenger rear side. Video of the Ticking/Chirping here: https://youtu.be/5E3CuR-y7xA Lifters? Any thoughts? __________________ More Pics \| Build Thread \| Garage Last edited by HarryNW; 06-16-2017 at 12:06 AM.

06-16-2017, 09:49 AM	#2
Moto-Mojo Fast Cars and Old Guitars Drives: 2015 2SS RS (L99, baby!) Join Date: Apr 2012 Location: N. CA Posts: 3,973	Well, I can't say what's wrong but my hearing is not so great and I can hear that on the video without my hearing aids! Hope you and the builders get it figured out. __________________ “I don’t want to belong to any club that would have me as a member.” - Groucho Marx

06-16-2017, 12:40 PM	#3
1Coopgt Drives: All Black 2012 1LS Join Date: Feb 2015 Location: Rochester,NY Posts: 2,042 View My Garage	Check all the spark plugs to make sure they are tight . Maybe the idler pulley ? Header leak ? __________________ Mods, K&N CAI ,VTC , GM Perf Axleback Exhaust, Elite Eng CC and CSS, GM Strut Tower Brace,Carbon Fiber Anvil Spoiler,ASC T5 Splitter,Gen5diy Foglight kit.

06-16-2017, 08:41 PM	#4
Jazzzed Drives: 2015 Camaro LT Join Date: Sep 2016 Location: Fox Lake, IL Posts: 393	A shot in the dark, but it would seem that the slight improvement at operating temperature would occur due to better oiling of the suspect component. Maybe something in that area of the engine is getting starved of oil. Also, rhythmically it seems to be too fast to be anything piston related. I do think its probably valve train related. Last edited by Jazzzed; 06-16-2017 at 08:54 PM.

06-16-2017, 09:08 PM	#5
NC_SS Drives: 2012 M6 Camaro SS (RIP) Join Date: Nov 2014 Location: Virginia Posts: 1,684	Almost sounds like a belt or a pulley to my ear Most valvetrain related issues I've ever heard were really bad knocking or ticking. That sounds like a bad pulley bearing or something to me __________________ Speed engineering 1 7/8 LTs, CAI inc Cold Air Intake, offroad connectors, Solo performance axle back with J pipes, tune, and in need of a driver mod LOL

06-16-2017, 09:09 PM	#6
NC_SS Drives: 2012 M6 Camaro SS (RIP) Join Date: Nov 2014 Location: Virginia Posts: 1,684	Just read where your builder said it sounds like it's from the valvetrain That's a rough sound, good luck OP __________________ Speed engineering 1 7/8 LTs, CAI inc Cold Air Intake, offroad connectors, Solo performance axle back with J pipes, tune, and in need of a driver mod LOL

06-16-2017, 09:10 PM	#7
Jrichards73 Drives: 2011 2SS/RS Victory Red Join Date: Aug 2011 Location: Virginia Posts: 921	Why does it sound like a bad injector noise to me? Like an old toyota camry an ex used to have. __________________ Updates: BTR Stage 2 VVT Cam Kit w/Smith Brothers Trunnions, Fluidampr, RX catch can, B&M Trans pan mod, Kooks Black Headers, Borla S-tunes, Eibach Multi-Pro-R2 coilovers and Swaybars, BMR Full Bushing kit with Toe and Trailing arms, RB Rotors w/EBC Pads, GForce 1400 Axles (now on order). AVH-X5800BHS in Scosche GM5201AB.

06-16-2017, 09:18 PM	#8
Jazzzed Drives: 2015 Camaro LT Join Date: Sep 2016 Location: Fox Lake, IL Posts: 393	Rhythmically once again, it does sound like one chirp per revolution. Lol. I count around 80 chirps per 10 seconds. So that would be 480 chirps per minute. Ha. I could be off slightly. That tempo is for shredders. But whatever it is that is chirping appears to be happening approx once per revolution. Don't know if that means anything.

06-17-2017, 07:27 AM	#9
JD555 Drives: 2014 2SS RS, 6 sp man Join Date: Feb 2016 Location: Marlton, NJ Posts: 461	sounds like a belt and pulley issue I chased for a long time. ended up being the pulley on the balancer. It was not on the camaro but my GM truck.