Causes and symptoms of a broken valve spring - Chevelle Tech
1999 -- Tech Files - reference area
1000's of previous topics

LinkBack Thread Tools Search this Thread Display Modes
post #1 of 3 (permalink) Old Jan 25th, 00, 4:35 PM Thread Starter
Join Date: Dec 1998
Location: Bedford, Texas USA
Posts: 4
My 71 ss454 is making a noise that a friend says sounds like a broken valve spring. What are the causes and signs and smyptoms?

David Flory is offline  
Sponsored Links
post #2 of 3 (permalink) Old Jan 25th, 00, 6:22 PM
Join Date: Feb 1999
Location: Marana, AZ
Posts: 13,481
One of the symptoms is a loud tapping from the rocker arm. You will have a miss usually on 2 cylinders, one on each bank that share an intake runner. The easiest thing to do is take off the valve covers and inspect the springs. If you can rotate one with your hand it is bad.

Philip Valentine
Gold Member #42
"Perseverance is not a long race; it is many short races one after another."
Philip is offline  
post #3 of 3 (permalink) Old Jan 26th, 00, 8:32 AM
Tech Team
Richard Morder
Join Date: Jan 2000
Location: Strasburg , Va
Posts: 361
Pull the valve cover, look for anything obvious (broken pieces), pull the coil wire or unplug the HEI depending on which type of ignition you're running, have a friend bump the motor over, on each cyl, make sure they all are opening about the same (a wiped lobe won't open as much or at all), after the intake valve closes, check the rocker arms for loose (loose nut/broken rocker/bent push rod), see if the valve spring can be rotated (it shouldn't), try to rotate the push rods (they should spin true), this should put you on track.
RicksRag is offline  
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the Chevelle Tech forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address. Note, you will be sent a confirmation request to this address.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Thread Tools Search this Thread
Show Printable Version Show Printable Version
Email this Page Email this Page
Search this Thread:

Advanced Search
Display Modes
Linear Mode Linear Mode

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 On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome