LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Big Headache, Plz Help

Thread Tools
 
Search this Thread
 
Old 06-09-2009, 06:27 PM
  #1  
Teching In
Thread Starter
 
TheBlackZ28's Avatar
 
Join Date: Feb 2008
Location: Round Rock, TX
Posts: 23
Likes: 0
Received 0 Likes on 0 Posts
Default Big Headache, Plz Help

ok well after a little over two weeks of trying everything i could think of im still having a few problems gettin my z back on the street. i was just cruising down the road on the way home from work and the car just lost total power. not missing or fuel clattering. barely idles and hesistates between 1000 to 2000 rpms and revs the rest but no power at all. ive tryed numerous things now, new optispark, coil, ignition module, wires plugs, fuel filter, has 27 psi fuel at idle, fresh gas (thought it was bad gas at first), map sensor, bypassed the msd box (nothing changed), air idle control cleaned and working properly, ran injector cleaner through, sprayed cleaner to check for any kind of vacuum leaks, cam isnt worn flat, and yes after every repair i d/c the battery to reset the computer, no check engine light btw. any ideas from anyone would be helpful at this point. im about to loose my mind.
Old 06-09-2009, 06:43 PM
  #2  
12 Second Club
iTrader: (35)
 
Schweet97Z's Avatar
 
Join Date: Jan 2006
Location: Danville PA
Posts: 1,550
Likes: 0
Received 0 Likes on 0 Posts

Default

you fuel pressure is off. check it again.
Old 06-09-2009, 06:45 PM
  #3  
12 Second Club
iTrader: (35)
 
Schweet97Z's Avatar
 
Join Date: Jan 2006
Location: Danville PA
Posts: 1,550
Likes: 0
Received 0 Likes on 0 Posts

Default

Check it this way...
http://shbox.com/1/4th_gen_tech2.htm...essure_testing
Old 06-09-2009, 07:07 PM
  #4  
TECH Senior Member
iTrader: (36)
 
ss.slp.ls1's Avatar
 
Join Date: Jan 2008
Location: Orange County, CA
Posts: 8,188
Received 26 Likes on 24 Posts

Default

Originally Posted by Schweet97Z
you fuel pressure is off. check it again.
Agreed, you should be at ~43.5psi with the vacuum line disconnected from the fuel pressure regulator.
Old 06-10-2009, 04:55 PM
  #5  
Teching In
Thread Starter
 
TheBlackZ28's Avatar
 
Join Date: Feb 2008
Location: Round Rock, TX
Posts: 23
Likes: 0
Received 0 Likes on 0 Posts
Default

thank you for the info, today after work ill try that then if not im going to pull the intake and heads and replace everything inbetween even though the motor only has 18k on it. i have no clue what else itll be, but brain fart as im typing, i also need to check the fuel pump sock for cloggage. anyone know where to cut a hole in the rear section of the car to access the pump?
Old 06-10-2009, 04:59 PM
  #6  
TECH Senior Member
iTrader: (36)
 
ss.slp.ls1's Avatar
 
Join Date: Jan 2008
Location: Orange County, CA
Posts: 8,188
Received 26 Likes on 24 Posts

Default

Originally Posted by TheBlackZ28
thank you for the info, today after work ill try that then if not im going to pull the intake and heads and replace everything inbetween even though the motor only has 18k on it. i have no clue what else itll be, but brain fart as im typing, i also need to check the fuel pump sock for cloggage. anyone know where to cut a hole in the rear section of the car to access the pump?
I would troubleshoot a bit more before pulling the heads and intake...
Old 06-10-2009, 09:31 PM
  #7  
12 Second Club
iTrader: (35)
 
Schweet97Z's Avatar
 
Join Date: Jan 2006
Location: Danville PA
Posts: 1,550
Likes: 0
Received 0 Likes on 0 Posts

Default

Did you check fuel pressure? What plugs are you running? Could have you fouled / melted a plug? You spray alot?

O YOU NINJA DELETED YOUR LAST POST!!!! lol



Quick Reply: Big Headache, Plz Help



All times are GMT -5. The time now is 04:05 AM.