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

A little problem..

Thread Tools
 
Search this Thread
 
Old Oct 25, 2006 | 10:13 PM
  #1  
the_merv's Avatar
Thread Starter
Banned
iTrader: (88)
 
Joined: Mar 2006
Posts: 21,019
Likes: 891
From: The Beach...
Default A little problem..

This is what I got. The Engine along with everything else is in the car, and functioning. This is the problem. I go to start it, it back fires, sputters, won't barely even fire, and it floods.
This is what I did to check it over..
Everyone kept saying timing, so I took it all the way down to the OPTI, and turned the Crank until the Cam went to 9:00 position, which was #1 TDC, and placed the OPTI correctly on it(only 1 hole for it). The Timing Chain went on correctly(dots touching), so now there is no way the timing is messed up.
Then I re-set the lash on the Rockers since they now have oil in the Lifters, so that is good.
I checked all the plug wires, and they are in the correct spots.
The Starter works very well, no problems there.
It fires a couple of Cylinders, dies, fires a couple more, and it's done. That's with my foot to the floor. I think it's flooded, so I have to check that out.

I think it may be a Sensor somewhere, everything mechanical checks good, but if anyone has any input, throw it in..
Reply
Old Oct 26, 2006 | 12:22 AM
  #2  
GOaT Cheese's Avatar
TECH Enthusiast
 
Joined: Jul 2006
Posts: 638
Likes: 0
From: San Diego
Default

Factory fuel injectors?
Reply
Old Oct 26, 2006 | 12:53 AM
  #3  
Formula350's Avatar
TECH Senior Member
iTrader: (3)
 
Joined: Oct 2006
Posts: 7,564
Likes: 4
From: Decatur, TN (N-W of Athens)
Default

Connectors correctly on the fuel injectors? As in, on the right ones?
Reply
Old Oct 26, 2006 | 08:28 AM
  #4  
the_merv's Avatar
Thread Starter
Banned
iTrader: (88)
 
Joined: Mar 2006
Posts: 21,019
Likes: 891
From: The Beach...
Default

Yup, they are right. We think it's a Sensor, or a setting in the Computer. The last time it ran it was mis-firing, and had that spun Bearing. The Computer could be in a safety mode.
Reply
Old Oct 26, 2006 | 08:44 AM
  #5  
thesoundandthefury's Avatar
TECH Fanatic
iTrader: (3)
 
Joined: Jun 2005
Posts: 1,159
Likes: 1
Default

Before you tore the engine down to R&R everything, did you ever diagnose what was causing the misfire?
Reply
Old Oct 26, 2006 | 08:56 AM
  #6  
the_merv's Avatar
Thread Starter
Banned
iTrader: (88)
 
Joined: Mar 2006
Posts: 21,019
Likes: 891
From: The Beach...
Default

I re-built with a new block, new Pistons and Rods, Rings, etc..
The old one was mis-firing cause the #4 Rod Bearing spun apart, shot metal in the Oil Pan, stopped the Oil Pump, causing the Main Bearings to spin. When that Rod Bearing went, it lost compression in that Cylinder, and mis-fired.
Reply
Old Oct 26, 2006 | 09:14 AM
  #7  
01WS6/tamu's Avatar
TECH Senior Member
20 Year Member
iTrader: (37)
 
Joined: Oct 2004
Posts: 5,119
Likes: 73
From: somewhere in TX
Default

ouchy painful death!! You might check the readings on the coolant temp sensor. When they frag it will tell the pcm it -40F outside and it will flood the **** out of it.
Reply
Old Oct 26, 2006 | 11:35 AM
  #8  
the_merv's Avatar
Thread Starter
Banned
iTrader: (88)
 
Joined: Mar 2006
Posts: 21,019
Likes: 891
From: The Beach...
Default

So you think I might need a new one of them on the Front of the Water Pump there..
It is running rich, really rich. I am going to check Compression just to make sure.
Reply




All times are GMT -5. The time now is 08:48 PM.