LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

missfires, studdering, knock retard, HELP

Thread Tools
 
Search this Thread
 
Old Apr 13, 2007 | 02:07 AM
  #1  
c5formula's Avatar
Thread Starter
Registered User
 
Joined: Sep 2006
Posts: 290
From: ocean springs MS
missfires, studdering, knock retard, HELP

alright my problem is really the knock retard. for some reason will running out the gears my ecu is pulling timing. it looks to be false knock cause it starts off high but then drops off as the rmps increase. not real sure what is causeing this and i need to fix it fast. im trying to spray this thing but dont want to blow it up. my set up is le2, stock short block, around 11.5.1 compression, all the bolt ons. also am running some tr7 plugs, stock replacement plug wires, stock opti, msd blaster coil, mallary 685 ign box. top end is comp spring, pushrods, 1.6rrs, and lifters. oh and its all on a 97 lt1 formula with the obd1 swap. friend of mine thinks it has something to do with either the opti or the plug wires. i just cant figure it out. any help is much welcome.
thanks
Old Apr 13, 2007 | 09:25 AM
  #2  
95LT1conv's Avatar
Registered User
 
Joined: Mar 2006
Posts: 916
From: putnam, Ct
do you at least have a LT4 KM or did you have yours desensitized with a tune? I'm sure your getting at least a little valvtrain noise that would cause part of it.
Old Apr 13, 2007 | 03:28 PM
  #3  
c5formula's Avatar
Thread Starter
Registered User
 
Joined: Sep 2006
Posts: 290
From: ocean springs MS
put the lt4 knock mod in before i put heads on it. i also tried the spray out and for some reason it starts fine but starts to stuter and sputer real bad around 4100 and up. no clue whats causing that. please help someone
Old Apr 14, 2007 | 10:58 AM
  #4  
c5formula's Avatar
Thread Starter
Registered User
 
Joined: Sep 2006
Posts: 290
From: ocean springs MS
no one can shine any light on my problem?
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
94Maroz28
LT1 Based Engine Tech
30
Oct 27, 2015 04:38 PM
football4life
Cars For Sale
2
Oct 4, 2015 07:48 AM
SergheiS
General 1967-2002 F-Body Tech
5
Sep 29, 2015 08:56 PM
SEOJustin
Computer Diagnostics and Tuning
5
Sep 24, 2015 04:39 PM
asilomar244
LT1 Based Engine Tech
17
Jul 12, 2015 05:53 AM




All times are GMT -5. The time now is 11:12 AM.