C6 engine knock
Burning Brakes
Joined: Nov 2005
Posts: 1,228
Likes: 44
From: Houston MN
St. Jude Donor '10
Melting Slicks
Joined: Jan 2004
Posts: 2,246
Likes: 5
From: West Coast
Burning Brakes
Joined: Nov 2005
Posts: 1,228
Likes: 44
From: Houston MN
St. Jude Donor '10
Thread Starter
5th Gear
Joined: Dec 2010
Posts: 5
Likes: 0
From: FOLSOM CA
I didn't keep it on long enough to warm up for fear of more damage. The noise or knock is very loud and not normal. Had it towed to the dealer today. Service rep started it and turned it off right away too.
Race Director
Joined: Oct 2010
Posts: 14,475
Likes: 785
From: Las Vegas NV
It must be different than what mine is doing then. Mine sounds normal at idle and starts knocking at about 1000 rpm and the knock goes away completely when the oil temp. gets to 90 deg. Good luck and update us on it.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
Melting Slicks
Joined: Jan 2004
Posts: 2,246
Likes: 5
From: West Coast
Melting Slicks
Joined: Dec 2009
Posts: 3,213
Likes: 17
MY 09 HAS HAD A SMALL TICKING WHEN NEW AND SAME 900 MI LATER,SOUNDS ALMOST LIKE A LIFTER,,,,BUT IT COULD BE GMS
P.SLAP. WHO KNOWS WITH GM,YOURS KIND OF SOUNDS LIKE A ROD
GOOD LUCK!......YOU KNOW GM, GET IT OUT THE DOOR AND FIX IT LATER.....
P.SLAP. WHO KNOWS WITH GM,YOURS KIND OF SOUNDS LIKE A ROD
GOOD LUCK!......YOU KNOW GM, GET IT OUT THE DOOR AND FIX IT LATER.....
Race Director
Joined: Dec 2010
Posts: 18,093
Likes: 1,585
Melting Slicks
Joined: Jan 2004
Posts: 2,246
Likes: 5
From: West Coast
No mod war here, we all know mods void warranties and can shorten engine/trans life.
Last edited by LBear; Dec 28, 2010 at 02:30 PM.
Burning Brakes
Joined: Nov 2005
Posts: 1,228
Likes: 44
From: Houston MN
St. Jude Donor '10
Melting Slicks
Joined: Dec 2009
Posts: 3,213
Likes: 17
the oil thins after it heats up,mabe something is causing it not to get enough oil till it warms up and the oil is thiner so it is pumped easyer,but it does sound like something is not getting oil,but i know how you feel,all i want to hear is the intake and ex.......what is your oil p. reading when this is happening ?..
Burning Brakes
Joined: Jun 2010
Posts: 1,086
Likes: 2
Lifters will tick in these cars from time to time. Sounds like a typewriter. An actual knock, like you are knocking on a wood desk or something, is something to be concerned about. Lets see what the dealer finds.
Le Mans Master
Joined: Aug 1999
Posts: 5,411
Likes: 2
From: N Carolina 08 Z51 Coupe
even with the "skull" cap on the LS3, the valve train is pretty noisy..but normal.. I experienced a dry valve train "knock" on two occasions in the 3+ years I owned the car. Sounds like a lifter was not pumped up and took a few seconds before it was normal again. Occured after sitting for a few days each time.. but have had it sit for a week or more and no unusual noise.. I don't see it as a problem as much as an anomaly you get with push rod engines..Or.. you can look at it as a problem.. and it will probably fail within the next 150K to 175K miles..
