Generation III External Engine LS1 | LS6 | Bolt-Ons | Intakes | Exhaust | Ignition | Accessories
Sponsored by:
Sponsored by:

Running rich

Thread Tools
 
Search this Thread
 
Old Sep 8, 2007 | 10:58 PM
  #1  
akolno's Avatar
Thread Starter
Teching In
 
Joined: Mar 2006
Posts: 7
Likes: 0
From: Norway
Question Running rich

Installed a -02 LS1 in a G-body. The engine starts, but is running very rough, and is hardly idling. Strong gas smell from exhaust. Plugs get heavy sooted. Change plugs, and new plugs get sooted. New Granatelli fuelpump inside tank, Corvette fuel filter/regulator.
Can fuel pressure be too high? Can anyone please help me out?
Reply
Old Sep 8, 2007 | 11:10 PM
  #2  
RoDan's Avatar
TECH Enthusiast
 
Joined: Aug 2006
Posts: 542
Likes: 0
From: Memphis, TN
Default

throwing any codes?
Reply
Old Sep 9, 2007 | 03:18 AM
  #3  
Z28LS1camaroguy's Avatar
TECH Addict
iTrader: (3)
 
Joined: Apr 2005
Posts: 2,905
Likes: 0
From: Northern Kentucky
Default

probably a tuning issue.
Reply
Old Sep 9, 2007 | 06:28 AM
  #4  
orangeapeel's Avatar
ЯєŧąяĐ Єl¡m¡иąŧøя ™
iTrader: (18)
 
Joined: Nov 2004
Posts: 16,083
Likes: 4
From: Justin, TX
Default

You did use a filter that was intended for fuel injection right? Otherwise its insides are probably hanging out in the fuel rail under the hood by now.
Reply
Old Sep 9, 2007 | 01:51 PM
  #5  
akolno's Avatar
Thread Starter
Teching In
 
Joined: Mar 2006
Posts: 7
Likes: 0
From: Norway
Default

The filter is the one for Corvette C5. Should be ok. No codes.
Reply
Old Sep 9, 2007 | 03:36 PM
  #6  
trans am1's Avatar
Teching In
iTrader: (4)
 
Joined: Apr 2007
Posts: 49
Likes: 0
From: hawaii
Default

tunning should get it running smooth
Reply
Old Sep 9, 2007 | 04:04 PM
  #7  
KRAZY K 2000 TA's Avatar
11 Second Club
iTrader: (5)
 
Joined: Mar 2003
Posts: 805
Likes: 1
From: Stockton, NY
Default

what is your fuel pressusre?
Reply
Old Sep 9, 2007 | 07:24 PM
  #8  
txredss's Avatar
Teching In
iTrader: (1)
 
Joined: Apr 2006
Posts: 20
Likes: 0
From: tyler tx
Default

Is the engine stock? If not what mods? I would probably start off by checking all my grounds for the engine/chasis. Do you have any way to look at engine data to see what the o2's, map, maf, STFT, LTFT are reading....Sounds like a sensor related issue maybe.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

10 Reasons Daily Driving a Swap Project SUCKS! (& 1 Reason to Do It Anyway)

 Michael S. Palmer
story-1

6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

 Brett Foote
story-2

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

 Pouria Savadkouei
story-3

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-4

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-5

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-6

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-7

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-8

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-9

Top 10 Most Powerful Chevy Trucks Ever Made!

 
Old Sep 9, 2007 | 09:46 PM
  #9  
Atver300's Avatar
11 Second Club
iTrader: (8)
 
Joined: May 2007
Posts: 137
Likes: 0
From: Memfrica, TN
Default

had that happen when i wired my 5.3 in my s10 and it was a 5 volt refrence wire problem where i had tied in the ect sensor but i was throwing a few codes. have you tried unpluging either the maf or the map sensors
Reply
Old Sep 9, 2007 | 10:04 PM
  #10  
akolno's Avatar
Thread Starter
Teching In
 
Joined: Mar 2006
Posts: 7
Likes: 0
From: Norway
Default

Thanks folks. Haven`t checked fuelpressure and engine data yet. Ordered new fuel gauge today.
Reply




All times are GMT -5. The time now is 01:11 AM.

story-0
10 Reasons Daily Driving a Swap Project SUCKS! (& 1 Reason to Do It Anyway)

Slideshow: 10 reasons daily-driving a swap project might not be for you. Or is it?

By Michael S. Palmer | 2026-06-17 09:39:05


VIEW MORE
story-1
6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

Don't get dad new socks or a grill brush this year.

By Brett Foote | 2026-06-09 14:55:56


VIEW MORE
story-2
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-06-18 10:26:23


VIEW MORE
story-3
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-4
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-5
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-6
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-7
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-8
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-9
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE