LS1TECH - Camaro and Firebird Forum Discussion

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

help diagnosing an engine knock

Thread Tools
 
Search this Thread
 
Old Jun 3, 2009 | 08:57 PM
Share
  #1  
nebur8's Avatar
nebur8
Thread Starter
Launching!
iTrader: (6)
 
Joined: Jan 2004
Posts: 202
Likes: 0
From: Pembroke Pines, FL
Default help diagnosing an engine knock
only does this when it's warmed up. Starts at about 1500rpm-3500rpm. Here are a couple of videos. it sounds like it's coming from the driver side back of the intake area.

http://s705.photobucket.com/albums/w...t=06032009.flv

http://s705.photobucket.com/albums/w...6032009001.flv
Reply
0
Old Jun 3, 2009 | 09:14 PM
Share
  #2  
bigboykilroy's Avatar
bigboykilroy
11 Second Club
iTrader: (48)
 
Joined: Sep 2006
Posts: 730
Likes: 4
From: Aurora, Ohio
Default
it kinda sounds like a bent pushrod, have you pulled the covers and checked them?
Reply
0
Old Jun 3, 2009 | 10:34 PM
Share
  #3  
nebur8's Avatar
nebur8
Thread Starter
Launching!
iTrader: (6)
 
Joined: Jan 2004
Posts: 202
Likes: 0
From: Pembroke Pines, FL
Default
i haven't pulled the valve covers yet. I havent encountered a loss of power though.
Reply
0
Old Jun 4, 2009 | 09:02 AM
Share
  #4  
nebur8's Avatar
nebur8
Thread Starter
Launching!
iTrader: (6)
 
Joined: Jan 2004
Posts: 202
Likes: 0
From: Pembroke Pines, FL
Default
when i remove the valve cover, what should i look for as an indication of a problem with the pushrods?
Reply
0
Old Jun 4, 2009 | 01:10 PM
Share
  #5  
SOMbitch's Avatar
SOMbitch
TECH Senior Member
iTrader: (8)
 
Joined: Sep 2007
Posts: 6,881
Likes: 3
Default
Originally Posted by nebur8
when i remove the valve cover, what should i look for as an indication of a problem with the pushrods?

Take the rocker arms off. Then pull out the pushrods and roll them on glass tabletop or other flat surface and see if one is bent.
Reply
0
Old Jun 4, 2009 | 05:51 PM
Share
  #6  
nebur8's Avatar
nebur8
Thread Starter
Launching!
iTrader: (6)
 
Joined: Jan 2004
Posts: 202
Likes: 0
From: Pembroke Pines, FL
Default
any other opinions?
Reply
0
Tags
Back to Subforum
Generation III Internal Engine
View Next Unread
prc .660" springs with stock cam ok?




Advanced Search

All times are GMT -5. The time now is 09:00 AM.