timing problem - Team Camaro Tech
Troubleshooting Diagnosing problems done here.

 
LinkBack Thread Tools Display Modes
post #1 of 6 (permalink) Old Dec 14th, 02, 08:28 AM Thread Starter
 
Join Date: Dec 2001
Posts: 19
i have a 69 camaro 305 built engine that i am having problems with. i can set the timing but when reving up the engine the timing does not change any. vaccum advance also does not change anything. the car runs strong when timing set at 30btc at 2500rpm but is hard to start when hot. if i lower timing starts ok but runs poor. what do look i look for. why does the timing not change.
if i set it at 2500 rpm then drop back to 1000rpm there is no change. i can run it up to 3500 rpm and still no chang. any ideas.
TWSLPS is offline  
Sponsored Links
Advertisement
 
post #2 of 6 (permalink) Old Dec 14th, 02, 12:11 PM
Senior Tech
John
 
JohnZ's Avatar
 
Join Date: Sep 2000
Location: Washington, Michigan USA
Posts: 7,728
The centrifugal advance mechanism is stuck (weights/springs under the rotor); remove the pieces, clean, and re-assemble with a drop of lube on the pivot pins.

Either that or the springs are broken or missing.

------------------
JohnZ
CRG
'69 Z28 Fathom Green
JohnZ is offline  
post #3 of 6 (permalink) Old Dec 14th, 02, 01:10 PM Thread Starter
 
Join Date: Dec 2001
Posts: 19
thanks i will look at that in the morning
TWSLPS is offline  
 
post #4 of 6 (permalink) Old Dec 15th, 02, 04:50 AM Thread Starter
 
Join Date: Dec 2001
Posts: 19
i have the cap & rotor off and the weights move freely and springs are in place.
should i be able to move advance mech. by hand? weights fit very loose on pin, is this correct? thanks
TWSLPS is offline  
post #5 of 6 (permalink) Old Dec 15th, 02, 12:47 PM
Senior Tech
John
 
JohnZ's Avatar
 
Join Date: Sep 2000
Location: Washington, Michigan USA
Posts: 7,728
You should also be able to grab the plate under the weights and turn it about 20 degrees by hand, and it should snap back by itself - if it doesn't, the autocam mechanism is frozen up.

Or, the springs could be so weak that you're getting full advance all the time, even at idle.

------------------
JohnZ
CRG
'69 Z28 Fathom Green
JohnZ is offline  
post #6 of 6 (permalink) Old Dec 15th, 02, 02:44 PM Thread Starter
 
Join Date: Dec 2001
Posts: 19
the center plate under with the springs would not turn at all. i was able to get the center plate off, but it fits down on the teeth of the shaft. is this correct? should it fit this far down. how does it turn. i cleaned and oiled but did not correct anything. the bushing in the center plate looks like someone had maybe driven it down on the teeth of the shaft. should i buy new center plate and try that
TWSLPS is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

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

Password:


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:
OR

Log-in










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