Generation III Internal Engine 1997-2006 LS1 | LS6

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Old

Feb 1, 2011 | 08:44 AM

#1

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Staging Lane

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From: Ft.Worth, Tx

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Cold start

Ok so when I start up my car for the first time in the day it will start fine but after running a min or two it starts missing pretty bad. It does it all the way until it gets fully warmed up. I met a guy last weekend and he told me it's my intake gaskets. I just want to know if anyone else can verify this before I rip my intake off?

Old

Feb 1, 2011 | 09:14 AM

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Staging Lane

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anyone?

Old

Feb 1, 2011 | 09:19 AM

#3

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From: Odessa, Texas

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I have a similar problem with my car. I have an ms4 cam and a few other mods. I have to give it just a little gas to get it started and hold it steady to get it to idle smooth and after i let it warm up i go to take off it missfires at first until i get it going at a steady speed. And it will do it sometimes after i stop and take off from a light. Tey told me mine was my air to fuel ratio is off and mu o2's are reading bad

Old

Feb 1, 2011 | 09:34 AM

#4

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Staging Lane

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Have you had it tuned since the cam install, mine car is all stock but I dont have no rear o2 sensors so i think that could be part of my problem. I hear if you dont have the car tuned after cam installs it doesnt run right.

Old

Feb 1, 2011 | 10:21 AM

#5

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You guys need to retune your cars, or else the PCM won't understand what's going on. You guys are probably throwing codes, too...

Old

Feb 1, 2011 | 10:35 AM

#6

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Yes i have had it tuned and im getting retuned again after i put new o2's and injectors

Old

Feb 1, 2011 | 10:39 AM

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Quote:

Originally Posted by bryan4694

Ok so when I start up my car for the first time in the day it will start fine but after running a min or two it starts missing pretty bad. It does it all the way until it gets fully warmed up. I met a guy last weekend and he told me it's my intake gaskets. I just want to know if anyone else can verify this before I rip my intake off?

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Old

Feb 1, 2011 | 11:23 AM

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Staging Lane

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I dont have any major modds done enough to tune my car yet, I just scanned mine last weekend and the only code I am throwing is the o2 codes. I am going to have my car tuned after I get my heads, cam, and stall in.

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Old

Feb 1, 2011 | 11:24 AM

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Staging Lane

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My car is a Ls1 car

Old

Feb 1, 2011 | 11:27 AM

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Check the intake bolts, DON"T OVER TIGHTEN THEM!!!!!!!

Old

Feb 1, 2011 | 11:29 AM

#11

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Staging Lane

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From: Ft.Worth, Tx

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I will check them when I change out the gaskets

Old

Feb 1, 2011 | 11:49 AM

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NO the idea is to check them before, there is no reason to change them if the bolts are loose.

Old

Feb 2, 2011 | 08:06 AM

#13

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Staging Lane

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Well when i go to takew it off dont you think i would feel that they are loose

Old

Feb 2, 2011 | 08:07 AM

#14

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From: Turnin' Wrenches Infractions: 005

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You didnt happen to seafoam the car did you

Old

Feb 2, 2011 | 08:21 AM

#15

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Staging Lane

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lol not that i know

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