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

cam/rocker install - car wont idle anymore

Thread Tools
 
Search this Thread
 
Old Nov 5, 2005 | 10:23 PM
  #1  
kingman109's Avatar
Thread Starter
Registered User
 
Joined: Aug 2001
Posts: 1,428
From: Boulder, CO -
Unhappy cam/rocker install - car wont idle anymore

well 2 weeks ago tore apart my engine to do cam install-

Parts installed -
CC XE 230 / 236, .510 / .520 112 LSA Cam
Comp Cams 26918-16 springs
Comp Cams 787-16 retainers
Comp Cams 601-16 valve locks
Comp Cams Pro Magnum 1.6 RR
ARP 7/16" rocker studs
Comp Cams 720H-16 pushrods
New Valve seals
AFR guide plates
LT4 timing chain

okay- we installed everything and started her up and she ran perfect except a high idle (1100) - I drove the car home and ran great the entire way would idle at a stop and good throttle responce. Well 2 days later i started the car up and she was running rough and having trouble idling, drove her around my parking lot and she wouldnt idle and would only run if i kept giving her gas.

popped the hood and found i had a cracked coolant hose which started spitting on my opti , and found a huge crack in my PCV line- So i cut out and replaced the coolant line and capped my TB and put a breather on the valvecover. Still wouldnt idle on her own- Today just threw in a madz28 tuned computer into her hoping it would fix the problem but hasnt done a thing.... she wont idle without gas.

Any suggestions on what this could be- so far i think possibly
a) vacum leak
b) IAC
c) MAP
d) valve lash too tight
e) opti ?


i checked and all vacum lines look seem fine- all plugs are plugged in and cleaned my IAC but that doesnt seem to help - car isnt throwing any codes and my EGR , rear o2's, and AIR have been deleted from the computer and car-

Other issue which may be- is when we rebuilt car we powdercoated my intake manifold, alternator and bunch of brakets- Well alternator is not working since- and so i drove home on battery- when i found the coolant leak my battery was nearly dead and since has died. So maybe the issue is charging related?

If i jump my car and start it- can the battery hold enough of a charge to idle if i leave the bumper cables connected-?

Last edited by kingman109; Nov 5, 2005 at 10:40 PM.
Old Nov 5, 2005 | 11:06 PM
  #2  
HardcoreRM125's Avatar
Registered User
 
Joined: Apr 2003
Posts: 2,628
From: Pgh, PA
Re: cam/rocker install - car wont idle anymore

Well, if its not charging, then it wont get a strong spark. If theres bad spark, its not going to idle well. Get the alternator going good first and see what happens? What do you have to loose? It needs fixed anyways, and theres no sense in throwing money and time into it that it doesnt need.

Although the Opti does suck massive ****, I have gotten mine wet a few times and the car would run like junk for a day ( Or refuse to start one time, for like 2 days ) but once it dried out, it was fine ... Dont run and buy a new Opti unless you know its bad.
Old Nov 5, 2005 | 11:17 PM
  #3  
kingman109's Avatar
Thread Starter
Registered User
 
Joined: Aug 2001
Posts: 1,428
From: Boulder, CO -
Re: cam/rocker install - car wont idle anymore

ya thats the game plan - as far as opti i have a new one laying around from a previous problem i just dont want to tear the front apart to get to it again-

ill get the alternator running and then start trying to diagnose the problem i guess-
Old Nov 9, 2005 | 09:50 AM
  #4  
kingman109's Avatar
Thread Starter
Registered User
 
Joined: Aug 2001
Posts: 1,428
From: Boulder, CO -
Re: cam/rocker install - car wont idle anymore

figured id update :

bad news: the powdercoating got in the bearing channel of alternator and thats why the car was able to run at first. alternator was somewhat working untill it destroyed shaft. so shop tried to clean out powdercoat and ground too much away destroying housing- so now hes building me a new one

good news: all the car problems were just because of the alternator not fullyworking and then eventually dieing

shes alive and fully tuned - will have some videos up this weekend -
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Noenav
Cars For Sale
2
Mar 1, 2019 07:38 AM
Britbilly
General 1967-2002 F-Body Tech
5
Jan 7, 2015 08:49 PM
USAirman93
General 1967-2002 F-Body Tech
4
Nov 24, 2014 03:37 PM
Snoman73
Cars For Sale
0
Nov 17, 2014 07:22 PM
F(ast)-body
LT1 Based Engine Tech
8
Feb 26, 2003 09:05 AM




All times are GMT -5. The time now is 07:13 AM.