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Old 03-17-2008, 07:37 AM
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quick carb question

(edelbrock 1406) if the float is out of adjustment will that cause the plugs to read a rich condition and the smell of gas..

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Old 03-17-2008, 10:04 AM
F&J F&J is offline
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Yes, and they are known to be adjusted too high when new. plus their specs are too high, IMO

Get specs from a 60's muscle car AFB instead.

I just found another problem on one last week; one of the metal floats was 1/2 full of gas! There is a spot of solder where they had a bleed hole that is used when soldering the 2 halves together. That bleed is filled last. Mine had a pinhole there.
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Old 03-17-2008, 10:06 AM
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Hi Dave,
A float level that is a little to high will tend to run a
little rich, A float that is a little to low will tend to run a little lean, this is because a high level takes less vacuum to pull the gas in, if some more info is needed check the link.
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Old 03-17-2008, 11:51 AM
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80%+ probability it is because you haven't fixed the fuel pressure yet....at 7.5psi the fuel liquid pressure "overpowers" the floats capability to stay closed when the bowl is just full....so gas just keeps pouring into the carb and into the motor and that is gaureeeeenteed to make plugs black and terrible mpg (and your timing was way to low for the cam in the other thread)

gotta fix that before you do anything else to tune the motor (on your other thread)....4.5psi is good...5.5psi is max

with correct pressure, if the floats are set wrong you will know it just driving...almost dies turning a corner or other symptoms listed on the trouble shooting page of the manual...

Last edited by red65mustang; 03-17-2008 at 11:58 AM.
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