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Holley 390 adjustment help

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Holley 390 adjustment help

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Old

Nov 18, 2003 | 11:32 AM

#1

MRStace84

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Joined: Jan 2003

Posts: 327

Likes: 1

Holley 390 adjustment help

I just put a Holley 390 4 barrell on my 84 300. It is running really rich. It is blowing wet soot out the tail pipe. Also it stumbles when you press the gas quick. I'm new to Holleys, how do I fix it?

Thanks

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Old

Nov 18, 2003 | 05:49 PM

#2

fishmanndotcom

Lead Driver

Joined: May 2000

Posts: 9,236

Likes: 12

From: Senoia, GA

get an Edelbrock

have you tried leaning it out any?
or checked the float level?

Go to Holley's website

-jason-

Last edited by fishmanndotcom; Nov 18, 2003 at 05:55 PM.

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Old

Nov 19, 2003 | 04:27 PM

#3

bremen242

Logistics Pro

Joined: Jan 2002

Posts: 3,739

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From: GANS

I guess would be floats. my 500 CFM edelbrock wasn't too that rich!

Once you fix it, make sure you change oil. Bad things happen when a lot of gas gets into the oil !

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Old

Nov 19, 2003 | 04:33 PM

#4

MRStace84

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I leaned it out with the mixture screw seems to be a lot better.

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