need carb help!!!
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Posting Guru
Joined: Feb 2008
Posts: 2,184
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From: dayton ohio
need carb help!!!
i have a holley built motorcraft carb from a 460 that i cannot find the idle mixture screws. i have searched many sites and found nothing. the numbers on the throat of the carb are as follows
E3TE-9510-PD
LIST 50004-1
2983
CAN ANYONE TELL ME WHAT MODEL CARB THIS IS AND WHERE ARE THE MIXTURE SCREWS?
E3TE-9510-PD
LIST 50004-1
2983
CAN ANYONE TELL ME WHAT MODEL CARB THIS IS AND WHERE ARE THE MIXTURE SCREWS?
Elder User
Joined: Feb 2008
Posts: 999
Likes: 1
From: Davison, Mi.
Should be a Holley 4180 600 cfm 4bbl off of an 83 Ford 351 or 460, from a truck.
The idle mixture screws on those are on the left and right verticle walls of the primary metering block, right behind the primary fuel bowl.
The idle mixture screws on those are on the left and right verticle walls of the primary metering block, right behind the primary fuel bowl.
Elder User
Joined: Feb 2008
Posts: 999
Likes: 1
From: Davison, Mi.
Are the holes there?!?! Is your truck idling poorly? If so, maybe that's why. It will idle with them gone, but not very well.
Here's a pic.
Not your exact model but close enough. He's adjusting the idle mixture screw. Ignore the arrow.
Here's a pic.
Not your exact model but close enough. He's adjusting the idle mixture screw. Ignore the arrow.
Elder User
Joined: Feb 2008
Posts: 999
Likes: 1
From: Davison, Mi.
Never heard of that before. Must be to keep us from messing with the settings for emissions reasons.
You can put an adjustable metering block on it. Someone probably has one to donate to you. I don't.
You can put an adjustable metering block on it. Someone probably has one to donate to you. I don't.
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Thread Starter
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Posting Guru
Joined: Feb 2008
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From: dayton ohio
i found the mixture screws they are in the base plate and recessed far back in these little holes. they take an allen wrench to turn them. and the one ub=nder the acceleration pump is a bear to get to
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