To cry for
Safety Car
Joined: Jun 2001
Posts: 4,004
Likes: 2
From: Severna Park Md
Re: To cry for (69 LT1)
I dont think thats a definate indication of either. The 69 didnt have such clean exhaust to begin with. My 86 daily driver just passed emissions and if I get close enough to the tailpipe when its runnin it will give a burning feeling in the eyes. A better way of determining the mixture would be to check plug condition. Also, rapid and excessive black deposits in and around the tailpipes and back panel would surely indicate a rich mixture.
Instructor
Joined: Mar 2003
Posts: 236
Likes: 0
From: Spring Lake mi
Re: To cry for (69 LT1)
Good thing you keep the doors open,,,sounds like CO getting the best of you, You'd be suprized on what CO does and where it hang's,,be careful. I work for a local Gas utility and run CO calls all the time, people warming cars up in the garage and there CO alarms in the house go off. Burning eyes is just one sign of CO----be careful I can't stress enough.. better to run car outside of gargae if you need to run it for any lenght of time.
About mixture don't know just had to put my 2 cents in about your burning eyes...
About mixture don't know just had to put my 2 cents in about your burning eyes...
Team Owner
Joined: May 2001
Posts: 29,745
Likes: 3
From: Exiled to Richmond, VA - Finally sold my house in Murfreesboro, TN ?? Corner of "Bumf*&k and 'You've got a purdy mouth'."
CI 6-7-8 Veteran
CI-VIII Burnout Champ
St. Jude Donor '06-'10, '13
Re: To cry for (Greg)
Besides pulling the plugs there is another simple way to tell.
Richen up the idle mixture. Did the problem get better or worse? If better, keep going until the motor starts to stumble and then go back 1 turn. If worse, go back a few turns.
To set idle mixture its best to have a vacuum gage and a good tach. Set your idle speed first. Then, screw both mixture screws all the way in - yes the motor will stall. Then unscrew them both 2-3 turns, just make sure that the left and right are the same. Start it up and then continue to turn each one out one turn until you get the highest vacuum reading. After giving each mixture screw a turn, snap the throttle to clear things out. After you have unscrewed them a ways watch the vacuum, if it has climbed to say 16 and then is starting to fall, you went too far, turn them back in. You want to make sure both are set equally and you are aiming for best vacuum. While doing this make sure to keep your idle speed set correctly, as it will change.
Richen up the idle mixture. Did the problem get better or worse? If better, keep going until the motor starts to stumble and then go back 1 turn. If worse, go back a few turns.
To set idle mixture its best to have a vacuum gage and a good tach. Set your idle speed first. Then, screw both mixture screws all the way in - yes the motor will stall. Then unscrew them both 2-3 turns, just make sure that the left and right are the same. Start it up and then continue to turn each one out one turn until you get the highest vacuum reading. After giving each mixture screw a turn, snap the throttle to clear things out. After you have unscrewed them a ways watch the vacuum, if it has climbed to say 16 and then is starting to fall, you went too far, turn them back in. You want to make sure both are set equally and you are aiming for best vacuum. While doing this make sure to keep your idle speed set correctly, as it will change.
Melting Slicks
Joined: Jul 2002
Posts: 3,128
Likes: 3
From: Deltona (son of Deland and DAYTONA) FL
Re: To cry for (69 LT1)
another thing you can do (from Lars Qjet tuning paper)
temporarily block the airflow with your hand over the top of the carb. It the idle temporarily improves, the mixture is too lean. If it gets worse, too rich.
I wonder what effect hydrocarbons have on your eyes. More hydrocarbons can be the result of a timing adjustment, but I can't remember the correlation right now.
temporarily block the airflow with your hand over the top of the carb. It the idle temporarily improves, the mixture is too lean. If it gets worse, too rich.
I wonder what effect hydrocarbons have on your eyes. More hydrocarbons can be the result of a timing adjustment, but I can't remember the correlation right now.
