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

Car running like poo

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Old Mar 22, 2009 | 06:31 PM
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Default Car running like poo

My car has been sitting for about 2 years, fired it up yesterday after installing new opti (AC Delco), plugs, wires, MSD coil. Car runs like *******, there is no arching with the wires and they are not touching the headers, i made sure of this, car sputters and sounds like ***, almost like its running rich. Im suspecting the O2 sensors personally, because I have open headers and think 2 years of being out in the open could have fried them.
I put in fresh gas as well, so I don't suspect the fuel to be the problem


Update:
Ok, my belief now is that it is problems with my lifters, loud ticking noise coming from valve train on both sides, oil pressure does not move when car is revved.. normal? Oil pressure is steady at about 38psi

Here is vid shot today.. not good sound quality, hard for you to hear it *coughing* but you can hear the ticking.. clearly it is something with valve train:



What you guys think? car has been sitting for 2 years so I wouldn't doubt stuck lifters.. that would cause the car to run bad correct?

Last edited by 96blackz28; Mar 23, 2009 at 05:16 PM.
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Old Mar 22, 2009 | 06:37 PM
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i might post a video up soon so you guys can hear
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Old Mar 22, 2009 | 08:23 PM
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Well when you first fire up the car, it's in open loop and it's not using the o2's. I would hook up a fuel pressure gauge to the rail. Also double check your wire routing.
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Old Mar 22, 2009 | 08:44 PM
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yea i will double check that, possible the coil or ICM maybe? (can autozone check ICMs?) I realize it an be a lot of things, but its backfiring as well once u rev and let off the throttle, it always did every now and then espcially with open headers, but its bad now

Last edited by 96blackz28; Mar 22, 2009 at 08:54 PM.
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Old Mar 22, 2009 | 08:59 PM
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did you cross a wire? its really easy to do. i think everyone with a lt1 has done it once at least
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Old Mar 22, 2009 | 09:03 PM
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yea like i said i will double check tomorrow, and if it still is, i will post a vid... i gotta get it running right, its almost spring and my trans is almost done
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Old Mar 22, 2009 | 09:13 PM
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your injectors could be gunked up with old gas after sitting for 2 yrs. how long did you let it run yesterday?
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Old Mar 22, 2009 | 09:26 PM
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ran for about 15 minutes, ill give it a good inspection tomorrow and report back
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Old Mar 23, 2009 | 05:17 PM
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bump.. added vid.. tell me what you think
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Old Mar 23, 2009 | 05:52 PM
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yeah man, i dont know about that noise. sounds pretty ominous. quality is a bit low to tell for sure.. but...
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