Tech / General Engine Is your car making a strange sound or won't start? Thinking of adding power with a new combination? Need other technical information or engine specific advice? Don't see another board for your problem? Post it here!
Sponsored by:
Sponsored by: CARiD

Base timing jumping at idle?

Thread Tools
 
Search this Thread
 
Old Nov 28, 2004 | 05:58 AM
  #1  
FireBoid's Avatar
Thread Starter
Junior Member
 
Joined: Oct 2003
Posts: 76
Likes: 0
From: Rochester, NY
Car: 1987 Firebird, 1997 Camaro
Engine: 2.8L, 3.8L
Transmission: T5, 4L60E
Base timing jumping at idle?

New Accel Billetech distributor. When I disconnect the set timing wire and attempt to set the timing, it jumps toward advanced with the idle surge. There's no mechanical or vacuum advance in HEI. What could cause this? Can't get the idle to settle down either. Think they're related.

Bill
Reply
Old Nov 28, 2004 | 06:16 AM
  #2  
FireBoid's Avatar
Thread Starter
Junior Member
 
Joined: Oct 2003
Posts: 76
Likes: 0
From: Rochester, NY
Car: 1987 Firebird, 1997 Camaro
Engine: 2.8L, 3.8L
Transmission: T5, 4L60E
Forgot a few things that may limit the number of questions;

New Jeg's performance ICM
New MSD Blaster coil and 8.5mm Super Conductor wires
New cap and rotor
Connectors all cleaned and inspected
Reply
Old Nov 28, 2004 | 10:09 AM
  #3  
Vader's Avatar
Moderator
25 Year Member
Liked
Loved
Community Favorite
 
Joined: Jan 2000
Posts: 19,655
Likes: 309
That symptom sounds typical of a worn distributor, but the new distributor shouldn't have that problem. There may also be some spark scatter from excessive spark voltage, an incorrectly keyed distributor cap or rotor, or a problem with the pickup coil, again, which shouldn't be a problem with the new distributor. Ignition timing at idle in EST bypass mode should be rock steady, as you know. Which connector did you disconnet to set the timing? I know the V-6s are a bit different.
Reply
Old Nov 28, 2004 | 06:16 PM
  #4  
FireBoid's Avatar
Thread Starter
Junior Member
 
Joined: Oct 2003
Posts: 76
Likes: 0
From: Rochester, NY
Car: 1987 Firebird, 1997 Camaro
Engine: 2.8L, 3.8L
Transmission: T5, 4L60E
I used the EST bypass.
Reply
Old Nov 28, 2004 | 08:25 PM
  #5  
mystikkal_69's Avatar
Supreme Member
iTrader: (2)
 
Joined: Jul 2001
Posts: 1,823
Likes: 1
From: San Antonio, TX
Car: 1988 IROC-Z
Engine: L98 (350 TPI)
Transmission: MD8 (700 R4) + 3.42 LS1 Rear
worn timing chain?
Reply
Old Nov 29, 2004 | 04:53 AM
  #6  
FireBoid's Avatar
Thread Starter
Junior Member
 
Joined: Oct 2003
Posts: 76
Likes: 0
From: Rochester, NY
Car: 1987 Firebird, 1997 Camaro
Engine: 2.8L, 3.8L
Transmission: T5, 4L60E
Brand new motor. Only has about 2 hrs on it. I know, got me baffled too.

Bill
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Infested
Tech / General Engine
3
May 22, 2018 11:56 PM
Spyder_TheGamer
Tech / General Engine
1
Dec 25, 2015 05:07 PM
Wade787b
TPI
2
Sep 29, 2015 01:15 PM




All times are GMT -5. The time now is 11:08 AM.