Rod Knock - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Reply
 
 
 
Thread Tools Search this Thread
Old 02-13-2004, 08:03 AM   #1
Junior Member
Thread Starter
 
Join Date: Feb 2004
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
david123abc is on a distinguished road
Default Rod Knock

My mom has a 1997 Bonneville SE, and this morning when she went to go to work, there was a terrible sound sort of like rod knock going on, but when I got close to the engine, it sounded more like it was coming from the top end, or around the cam area. Are bad bearings on the 3.8'* common, leading to rod knock, or are there any known top end problems that cause this problem? What about water pump bearings giong bad and causing that knocking noise? The car has 18?,000 miles on it, and has been fairly regularly maintained.
david123abc is offline   Reply With Quote
Old 02-13-2004, 08:42 AM   #2
Senior Member
True Car Nut
 
GAMEOVER's Avatar
 
Join Date: Aug 2003
Location: Racine Wi
Posts: 5,146
Thanks: 0
Thanked 0 Times in 0 Posts
GAMEOVER is on a distinguished road
Default

pushrod maybe but most likely as noisely lifter
GAMEOVER is offline   Reply With Quote
Old 02-13-2004, 08:45 AM   #3
Junior Member
Thread Starter
 
Join Date: Feb 2004
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
david123abc is on a distinguished road
Default

I thought about it maybe being a lifter, but this is very loud. I could hear it inside the house with the car parked outside. I was told it may be a stuck of collapsed hydraulic lifter. If thats it, what would the process be for replacing it? I assume the engine has to come out.
david123abc is offline   Reply With Quote
Old 02-13-2004, 09:16 AM   #4
Senior Member
True Car Nut
 
GAMEOVER's Avatar
 
Join Date: Aug 2003
Location: Racine Wi
Posts: 5,146
Thanks: 0
Thanked 0 Times in 0 Posts
GAMEOVER is on a distinguished road
Default

if its that loud its its a rod knock !!!!!! how is the oil ? changes often? was the upper intake replaced?
GAMEOVER is offline   Reply With Quote
Old 02-13-2004, 09:28 AM   #5
Junior Member
Thread Starter
 
Join Date: Feb 2004
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
david123abc is on a distinguished road
Default

Oil changes were done regularly. In fact it is due for another oil change and she was going to take it in this afternoon. It had the upper intake replaced last summer, it went and stranded my sister in the middle of the night.
david123abc is offline   Reply With Quote
Old 02-13-2004, 11:44 AM   #6
Member
Posts like a V-Tak
 
Join Date: Sep 2003
Location: knoxville tn
Posts: 40
Thanks: 0
Thanked 0 Times in 0 Posts
greenmoose92 is on a distinguished road
Default

i thought my knock was a lifter or timing chain or something 2 . i pulled the oil pan off and pulled #1 rod cap off and there it was i fixed the crank as good as i could and put a new rod bearing it and it quieted it for 3 months and just last week i put another on in it and it lasted a day till it started to knock again my guess its a rod
greenmoose92 is offline   Reply With Quote
Old 02-13-2004, 04:28 PM   #7
Senior Member
True Car Nut
 
GAMEOVER's Avatar
 
Join Date: Aug 2003
Location: Racine Wi
Posts: 5,146
Thanks: 0
Thanked 0 Times in 0 Posts
GAMEOVER is on a distinguished road
Default

only reason why i asked if upper intake was replace cuz antifreeze could have contributed to this problem by geting in the lower half of the motor
GAMEOVER is offline   Reply With Quote
Old 02-13-2004, 10:53 PM   #8
Senior Member
Certified GM nut
 
Join Date: Feb 2003
Location: Georgia
Posts: 2,095
Thanks: 0
Thanked 0 Times in 0 Posts
DrJay is on a distinguished road
Default

Well the last thing you wanna do is take it to a mechanic. lol
DrJay is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Horrific Rod Knock 92 SSEi 94SSEgold 1992-1999 4 07-30-2007 01:20 PM
l27 rod knock engine swap questions??? kaarazy 1992-1999 7 04-22-2007 10:19 AM
rod knock opensourceguy Lounge 7 03-12-2007 11:48 PM
knock knock knock L27Buick 1992-1999 7 09-17-2004 04:23 PM
Knock Knock, engine knock? Spiral 1992-1999 5 05-23-2004 10:08 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 11:45 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.