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Old 07-16-2012, 10:31 AM   #11
GASoline71
"I ain't nobody, dork."
 
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Join Date: Sep 2007
Location: Whidbey Island, Washington
Posts: 8,978
Re: Bad idle problem

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Originally Posted by hatred View Post
I've tried adjusting the air/fuel mixture but even turning them both all the way in changes nothing. Doesn't even make it die. I'm thinking the carb is junk but wanted other ideas.
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If you adjust the air mixture screws all the way in and it still runs... you have a vacuum leak. The intake gasket could have slipped during installation, and not sealed properly to the heads. Been there, done that...

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Originally Posted by hatred View Post
Fuel pump looks to be a stocker, and not very old. Havent checked the in tank filter yet. Tank is barely full now so this would be the best time probably.
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There have been some cats on here that have had to run a fuel pressure regulator for the Edelbrock carbs. They only like about 5psi. Anything more than that it will run like crud.

Quote:
Originally Posted by dmw319 View Post
Sounds like the carb to me also. Rebuild it or buy a new one!
A Holley!

Gary
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My 1972 GMC 1500 Super Custom (Creeping Death) "long term" build thread.

The Rebuild of Creeping Death after the wreck

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I would never rebuild a 305.
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Originally Posted by prostreetC-10 View Post
I love using vacuum gauges as part of the carb tuning process. I hook the gauge to the inside of my garbage can and leave it there.
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Remember Murphys 2nd law of mechanical relationships... "OPPOSING COMPONENTS ATTEMPTING TO OCCUPY THE SAME SPACE, AT THE SAME TIME, GENERALLY END UP OCCUPYING ADJOINING SPACE AT THE BOTTOM OF THE OIL PAN"
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Its cheaper to listen to advice given when you ask for help than it is to ignore everyone and wait for carnage.
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