Carburetors Carb discussion and questions. Upgrading your Third Gen's carburetor, swapping TBI to carburetor, or TPI to carburetor? Need LG4 or H.O. info? Post it here.

running rich

Thread Tools
 
Search this Thread
 
Old Sep 18, 2008 | 11:33 PM
  #1  
billybob6110's Avatar
Thread Starter
Supreme Member
 
Joined: Jun 2006
Posts: 1,422
Likes: 1
From: alliance, ohio
Car: 1984 chevy camaro
Engine: 355
Transmission: turbo 350 2800 stall
Axle/Gears: 3:73 detroit locker posi
running rich

hey guys i have a 84 camaro 350 with an edlebrock carb, manual choke and performer intake. i noticed that my car is stinking like rich exhaust and dunno how to make it leaner. im new with carbs so go easy with me . any help is appreciated
Reply
Old Sep 19, 2008 | 01:59 AM
  #2  
5678TA's Avatar
Supreme Member
 
Joined: May 2006
Posts: 1,857
Likes: 0
From: Maui, Hawaii
Car: 1984 Trans Am
Engine: broken 385sbc
Transmission: G-Force rebuilt T-5
Axle/Gears: Currie 9" Ford 4.30:1
Re: running rich

two things i can think of..

1. is the manual choke open when you drive??
2. what is the fuel pressure??




oh and what size carb?? you sure the motor is a 350 and not a 305??
Reply
Old Sep 19, 2008 | 12:18 PM
  #3  
xpndbl3's Avatar
Supreme Member
iTrader: (5)
 
Joined: Jan 2002
Posts: 13,622
Likes: 5
From: Orland Park, IL
Car: 1984 Z28
Engine: SLOW carbed ls
Transmission: TH400 with brake, 8" PTC converter
Axle/Gears: moser 9" 4.11
Re: running rich

fuel pressure, float level, mixture screws, etc etc. Go on edelbrock's website and download their manual for whatever carb you have and set it up following the instructions.
Reply
Old Sep 19, 2008 | 12:57 PM
  #4  
billybob6110's Avatar
Thread Starter
Supreme Member
 
Joined: Jun 2006
Posts: 1,422
Likes: 1
From: alliance, ohio
Car: 1984 chevy camaro
Engine: 355
Transmission: turbo 350 2800 stall
Axle/Gears: 3:73 detroit locker posi
Re: running rich

Originally Posted by 5678TA
two things i can think of..

1. is the manual choke open when you drive??
2. what is the fuel pressure??




oh and what size carb?? you sure the motor is a 350 and not a 305??
i have the manual choke open all the time. dont have lever hooked up for it. my fuel pressure is bout 6 at idle and bout i think 10 driven. yes its a 350 i ran the codes before i dropped it in. my carb is a 600cfm
Reply
Old Sep 19, 2008 | 02:54 PM
  #5  
5678TA's Avatar
Supreme Member
 
Joined: May 2006
Posts: 1,857
Likes: 0
From: Maui, Hawaii
Car: 1984 Trans Am
Engine: broken 385sbc
Transmission: G-Force rebuilt T-5
Axle/Gears: Currie 9" Ford 4.30:1
Re: running rich

IIRC, the fuel pressure should never go above 6.5psi.. theres your problem.. what does your fuel system look like?? pump, regulator, lines??

and nearly everyone will tell you to get a pressure gauge after the regulator..

also, if you have the choke open at all times, see if you can take it off.. you dont want it accidentally closing on you..
Reply
Old Sep 19, 2008 | 05:03 PM
  #6  
billybob6110's Avatar
Thread Starter
Supreme Member
 
Joined: Jun 2006
Posts: 1,422
Likes: 1
From: alliance, ohio
Car: 1984 chevy camaro
Engine: 355
Transmission: turbo 350 2800 stall
Axle/Gears: 3:73 detroit locker posi
Re: running rich

Originally Posted by 5678TA
IIRC, the fuel pressure should never go above 6.5psi.. theres your problem.. what does your fuel system look like?? pump, regulator, lines??

and nearly everyone will tell you to get a pressure gauge after the regulator..

also, if you have the choke open at all times, see if you can take it off.. you dont want it accidentally closing on you..
i have a pressure gauge but not a regulator. im running a stock fuel pump so maybe i otta double check it while i rev it up and watch fuel pressure. and i have braided line for the lines, and a summit presure gauge after my fuel filter
Reply
Old Sep 20, 2008 | 03:45 PM
  #7  
billybob6110's Avatar
Thread Starter
Supreme Member
 
Joined: Jun 2006
Posts: 1,422
Likes: 1
From: alliance, ohio
Car: 1984 chevy camaro
Engine: 355
Transmission: turbo 350 2800 stall
Axle/Gears: 3:73 detroit locker posi
Re: running rich

my buddy said that when i romped on it, it smoked a tit bit and went away and he said th exhaust smelt strong. that a rich running condition?
Reply
Old Sep 20, 2008 | 03:53 PM
  #8  
igotta355z28's Avatar
Senior Member
iTrader: (1)
 
Joined: Dec 2006
Posts: 998
Likes: 1
From: Bedford Tx
Car: 1991 Z28 1LE
Engine: 370CID GenIII
Transmission: 4l60e
Axle/Gears: 4.33 Moser 9inch
Re: running rich

dark black exhaust smoke is unburnt fuel....aka rich. check your plugs and compare them to this and tell us the results http://www.autolite.com/pdf/PlugTips.pdf
Reply
Old Sep 20, 2008 | 05:06 PM
  #9  
billybob6110's Avatar
Thread Starter
Supreme Member
 
Joined: Jun 2006
Posts: 1,422
Likes: 1
From: alliance, ohio
Car: 1984 chevy camaro
Engine: 355
Transmission: turbo 350 2800 stall
Axle/Gears: 3:73 detroit locker posi
Re: running rich

Originally Posted by igotta355z28
dark black exhaust smoke is unburnt fuel....aka rich. check your plugs and compare them to this and tell us the results http://www.autolite.com/pdf/PlugTips.pdf
my plugs look normal w a lil bit of black on the white part the electrode maybe? but it runs great besides stinking...and i was told it was black smoke
Reply
Old Sep 24, 2008 | 11:56 PM
  #10  
billybob6110's Avatar
Thread Starter
Supreme Member
 
Joined: Jun 2006
Posts: 1,422
Likes: 1
From: alliance, ohio
Car: 1984 chevy camaro
Engine: 355
Transmission: turbo 350 2800 stall
Axle/Gears: 3:73 detroit locker posi
Re: running rich

how would i lean my carb out? do i turn the screws in or out? im running 6 psi on fuel pressure any help is appreciated
Reply
Old Sep 25, 2008 | 12:46 PM
  #11  
five7kid's Avatar
Moderator
25 Year Member
iTrader: (14)
 
Joined: Mar 2000
Posts: 43,187
Likes: 43
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
The screws only affect the idle mixture. To change the cruise or power ratio, you need to change rods and/or jets.
Reply
Old Sep 26, 2008 | 12:02 AM
  #12  
billybob6110's Avatar
Thread Starter
Supreme Member
 
Joined: Jun 2006
Posts: 1,422
Likes: 1
From: alliance, ohio
Car: 1984 chevy camaro
Engine: 355
Transmission: turbo 350 2800 stall
Axle/Gears: 3:73 detroit locker posi
Re: running rich

Originally Posted by five7kid
The screws only affect the idle mixture. To change the cruise or power ratio, you need to change rods and/or jets.
it ran fine on my 305, we put it on my 350 and my buddy messed w the metering screws and it smells and it smokes on start up and a smitch black smoke on romping i
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
MustangBeater20
TBI
11
Oct 29, 2022 09:20 PM
Azrael91966669
DIY PROM
25
Jun 20, 2017 04:04 AM
Zeek1041
Theoretical and Street Racing
6
Aug 21, 2015 08:45 PM
tmellott89
DIY PROM
2
Aug 16, 2015 02:58 PM
squiggy2
TPI
4
Aug 9, 2015 09:30 PM




All times are GMT -5. The time now is 01:53 AM.