Holley Carb Rich/Lean Adjustment

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The Discount Inboard Marine team is going to show you how to adjust your Holley carb today!

With just a few simple steps and you'll be on your way to a smooth-running carburetor.

Thank you!

Get a new Holley 4160 carb for your inboard boat here:

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thx so much... so how do you adjust the other screw?

jkline

So when turning in air/idle in lean, when she starts to rise highest rpm point your saying to turn back rich by 3/4 to 1 full turn back, ? I was taught to bring to highest idle then back of 1/4 turn at best thanks j

roosterable

While idling and car in park, carb works fine
As soon as I put in reverse or drive to move the car, engine just shuts off
You think maybe is vacuum leak or still some adjustments need done on the carb

darylesmith

Lean conditions with burn holes in exhaust valves

eifeldude

2 barrel carburetor holly running Rich

PeteLimon-roic

I got a built 355 with big cam and holly highrise intake and 600cfm 4 barrel carburetor, it has hesitation on quick acceleration and sometimes makes a loud pop out of the carburetor, once it gets on the top end it has good response and pulls good but its having a hard time getting up and going. I feel like the motor can make alot more power but have no idea what to do, should i toss the 600cfm and get a 750cfm?

TheBrady

rich carby makes a strong smell or gas like its very fume but no smoke? my holley qft defiantly needs help

AsanoRacingPerformance

what if there's NO change when you mess with the idle adjust screw?

vicc

Great explanation. I have a Carter AFB On a small block Chevy engine. Two Issues that I cannot seem to fix. #1, It is very difficult to start after setting for 24 to 36 hours or longer. The 2nd and much more serious issue is the terrible gas mileage, aprox 5 MPG. I suspect it's running extremely rich. I know how to adjust the idol, But is there a way to adjusted the "rich/lean" at higher RPMs.

lennyf

On 350 engine my car
Valve covers the passenger side is getting alot hotter than drivers side car runs smooth not runing hot

harrisjr

Is this the same for the 2 barrel Holley carburetor too?

samappler

What if it won’t idle or dies when I try to idle

calebmiears

My 85 bronco will idle in every gear but drive. I have to feather the gas for it to stay on at stop lights.

calebmiears

WHAT CANT U JUST SAY RICH IS LEFT OR RIGHT

dtruth

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