Generation III Internal Engine 1997-2006 LS1 | LS6
Sponsored by:
Sponsored by:

Bad Pecking Noise

Thread Tools
 
Search this Thread
 
Old Feb 5, 2007 | 08:43 AM
  #1  
MRussell's Avatar
Thread Starter
Teching In
 
Joined: Dec 2004
Posts: 19
Likes: 0
Default Bad Pecking Noise

Ive got a bad pecking noise coming from the motor after a hard 2nd and 3rd gear pull to 6600 rpm. I didnt miss a shift or bouce off the rev limiter. When I let off of it in third gear it started pecking. When I slowed down it got a little louder, then after about 30 seconds or so it started missing. It sounds like it might be a lifter or something. At first I thought it might have been a broken valve spring or a bent push rod. But the pecking is coming from down inside the middle of the motor. And also the check engine light is coming on now.

I have the MS3 cam with PRC valve springs and hardened push rods from TSP. I didn't upgrade the lifters, they are still stock and have about 53000 miles on them. And the cam has only been in for 2 weeks with about 300 miles on it.

Would anyone know what might be the problem. Any help or suggestions would be much appreciated.
Reply
Old Feb 5, 2007 | 08:58 AM
  #2  
fenix999's Avatar
TECH Resident
iTrader: (17)
 
Joined: Jan 2007
Posts: 929
Likes: 1
From: Miami, Florida
Default

same noise coming from my motor and it sounds like its deep under the motor...like a rod, or possibly rod bearing got spun, and who knows, maybe we fried a piston or two....mine is the same noise but its more like a light clack clack clack clack clack...somebody help us out with these sound effects lol OH and PS- after that "noise" started, mine started throwing white smoke like a friggin train...maybe i hurt it worse than you did
Reply
Old Feb 5, 2007 | 10:39 AM
  #3  
slow trap's Avatar
TECH Addict
iTrader: (22)
 
Joined: Sep 2004
Posts: 2,639
Likes: 0
From: tennessee
Default

i'll say you have a spun main bearing. how is your oil pressure ? sometimes even with a spun bearing it will still have good pressure.
Reply
Old Feb 5, 2007 | 11:06 AM
  #4  
MRussell's Avatar
Thread Starter
Teching In
 
Joined: Dec 2004
Posts: 19
Likes: 0
Default

Mine has good oil pressure. It also smoked a little more than usual when I pulled it into the garage. I was still curious to find out where exactly the sound was coming from so I started it up again and it didn't smoke any and ran fine, all except the miss and the pecking noise. And also it feels like only one cylinder is missing. But everything had cooled down before I started it again.
Reply
Old Feb 5, 2007 | 11:12 AM
  #5  
ArcticZ28's Avatar
TECH Senior Member
20 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (14)
 
Joined: Jun 2004
Posts: 5,125
Likes: 4
From: Alexandria, VA
Default

Is the smoke white or white with blue tint? Regardless, I'd pull the valve covers and check everything out under there.
Reply
Old Feb 5, 2007 | 11:34 AM
  #6  
MRussell's Avatar
Thread Starter
Teching In
 
Joined: Dec 2004
Posts: 19
Likes: 0
Default

It looked to be just white, but it was at night without good light.
Reply
Old Feb 6, 2007 | 07:41 AM
  #7  
MRussell's Avatar
Thread Starter
Teching In
 
Joined: Dec 2004
Posts: 19
Likes: 0
Default

Nevermind. Just pulled the valve covers off tonight and found a rocker arm bolt had backed 2/3 of the way out. What a relief.
Reply




All times are GMT -5. The time now is 07:47 PM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE