engine noise - Team Camaro Tech
Troubleshooting Diagnosing problems done here.

LinkBack Thread Tools Display Modes
post #1 of 7 (permalink) Old Jun 13th, 00, 09:54 AM Thread Starter
Join Date: Jan 1999
Posts: 114

ok the engine is a 68' 396 that has been completly gone thru by a machine shop. after getting it fired up i hear a very noticeable knocking or tapping from the drivers side head area. when i rev it up to 2000 rpms it seems to go away? but very prominent at idle. the timing is way to advanced right now but didnt want to mess with it due to maybe something serious. any ideas


maross396 is offline  
Sponsored Links
post #2 of 7 (permalink) Old Jun 13th, 00, 10:09 AM
Senior Tech
Join Date: Feb 2000
Location: McKinney, Tx
Posts: 3,557

Sounds like a lifter out of whack, take off the valve cover, see if you can tell which lifter it's coming from. I've always found a short piece of garden hose does the trick, put it up to your ear and place it near each lifter until you figure out which one is ticking. Then, adjust it appropriately. Anyway, this is where I'd start. KZ http://www.geocities.com/kz1000ltd/
kz1000ltd is offline  
post #3 of 7 (permalink) Old Jun 15th, 00, 05:31 AM
Senior Tech
Join Date: Mar 2000
Location: Dtown PA
Posts: 820

go to a autoparts store and get the rocker covers so you dont spurt oil all over the place too, there only 6 bux

Chris's 67 RS can be seen at http://www.geocities.com/macphreak4evr/index.html
JOIN THE CAMARO NET WEBRING! www.geocities.com/macphreak4evr/webring/webringjoin.htm !!!
Chris Edwards is offline  
post #4 of 7 (permalink) Old Jun 17th, 00, 03:20 PM
Join Date: Jun 2000
Posts: 16

sounds like a lifter?
MEAN_RS is offline  
post #5 of 7 (permalink) Old Jun 19th, 00, 06:11 PM
Senior Tech
Join Date: Dec 1999
Location: Winston Salem, NC
Posts: 297

Same thing happened after I replaced the cam in my engine. About 45 seconds into the cam break-in, a VERY loud ticking sound started. It had me very worried, since I didn't know if one of the new lifters broke, or if there was something oil related since I also replaced the oil pump. I let it run since I was breaking the cam in and it quit after about 5 minutes. If it is a loud, high-pitched ticking, it's probably just a piece of dirt stuck in one of the lifter oil inlet holes so the lifter isn't getting oil and is ticking as the plunger inside hits the bottom of the lifter housing. You could pull the lifters and clean them, or it may go away like mine did.
jrt67ss350 is offline  
post #6 of 7 (permalink) Old Jun 20th, 00, 03:53 AM
Senior Tech
Join Date: Jul 1999
Location: Broomfield, Colorado
Posts: 755

Until my recent experiences I would have said it has to be a lifter. However, I'm going through stock rocker arms like crazy and they sound a lot like noisy lifters to me except there's a little rod knock-like sound in there too. The noise is most apparent in the 1500+ rpm range and quiets down around 2000 rpm.

Might be something else to check if you have stronger valve springs and an aggressive cam.

Mine are going away soon to be replaced by rollers.

'69 400SB, Richmond 5-speed; '99 HD Road King Classic
RockyMtnRacer is offline  
post #7 of 7 (permalink) Old Jun 20th, 00, 06:54 PM Thread Starter
Join Date: Jan 1999
Posts: 114

bummer, its a bent pushrod..not sure what to do now or what caused it..
maross396 is offline  
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the Team Camaro 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 we receive a lot of registrations with bad email addresses. IF you do not receive your confirmation email you will not be able to post. contact support and we will try and help.
Be sure you enter a valid email address and check your spam folder as well.

Email Address:


Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may post new threads
You may 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