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Old 12-09-2006, 10:48 PM   #1
92470
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Location: Maple Grove, MN
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Carb vacuum routing help needed please

Hi, can anyone tell me where I can get a diagram of how my vacuum lines are supposed to be connected from my carb to appropriate ports? I have a 71' Cheyenne with a 350 and a 4 bbl quadrajet. It's all stock, but I am in the process of running all new vacuum lines and want to make sure I get all lines running out of the carb to the appropriate ports. My factory shop manual shows how they are routed for climate control, but to my knowledge not the carb. There looks to be some sort of electronic advance on the driver side of the carb with a sticker on it saying "not to use it to adjust idle", I have no idea what it is and it has 2 ports that have nothing running to them! At some point, someone has substituted maintenance by re-routing things, and I would like to get it cleaned up. The truck runs, but with all of the vacuum leaks and hoses off, I haven't figured out how for this long! Thanks for your help!
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Old 12-10-2006, 12:32 AM   #2
timcos
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Location: Bentonville AR
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Re: Carb vacuum routing help needed please

Check this one out.

www.mygreatstuff.com/truck/scan0003.tif

Cheers,

Tim
__________________

1992 1500 4x4 Shortbed
1984 Ford F250 Supercab Longbed 6.9L Diesel
1972 K10 Cheyenne Super Fleetside Short Bed - 350 - A/C
1971 VW SuperBeetle
1960 Wife
1984 Son
1986 Son
1989 Son

Previous Trucks
1967 C10 SWB (1980-1981)
1971 C10 LWB (1998-2004)
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Old 12-10-2006, 10:14 AM   #3
92470
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Join Date: Nov 2006
Location: Maple Grove, MN
Posts: 149
Re: Carb vacuum routing help needed please

Thanks for the scan. I'll pop the hood and see if I can make sense of it. Right now, I'm having a hard time understanding it. I would like to find some sort of schematics like the factory shop manuals illustrate. They are kind of idiot proof for people like me! Thanks
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Old 12-10-2006, 08:44 PM   #4
timcos
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Location: Bentonville AR
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Re: Carb vacuum routing help needed please

See if one of these help you.

www.mygreatstuff.com/truck/scan0002.tif
www.mygreatstuff.com/truck/scan0004.tif
www.mygreatstuff.com/truck/scan0005.tif
www.mygreatstuff.com/truck/scan0006.tif

Cheers,

Tim
__________________

1992 1500 4x4 Shortbed
1984 Ford F250 Supercab Longbed 6.9L Diesel
1972 K10 Cheyenne Super Fleetside Short Bed - 350 - A/C
1971 VW SuperBeetle
1960 Wife
1984 Son
1986 Son
1989 Son

Previous Trucks
1967 C10 SWB (1980-1981)
1971 C10 LWB (1998-2004)
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