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05-06-2010, 03:16 PM
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#1 |
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Registered User
Join Date: Mar 2010
Location: Hydro, OK
Posts: 89
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running rich
How do I lean out a quadra jet? I don't see any adjustment on it just shy of disassembly.
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05-06-2010, 05:03 PM
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#2 |
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Registered User
Join Date: Oct 2009
Location: Downey, CA
Posts: 110
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Re: running rich
Look at the front of the quadra...there should be 2 screws, 1 on each side in the front of the carb. From my understanding the left screw is idle mixture the right screw is idle speed. Turn the left screw (idle mixture) to the right (clockwise) a quarter turn and give it some gas a couple of times. See what happens. Still running rich, turn the left screw ( idle speed) the same way a quarter turn, give it some gas and see what happens.
Let us know how you make out bud. |
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05-06-2010, 10:11 PM
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#3 |
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Registered User
Join Date: Mar 2010
Location: Hydro, OK
Posts: 89
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Re: running rich
I'm not finding any screws.
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05-06-2010, 10:18 PM
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#4 |
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Registered User
Join Date: Jun 2007
Location: Lethbridge, AB
Posts: 234
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Re: running rich
has the carb ever been rebuilt? if not thats why you can't find the screws. The adjustment screws are covered by two round plugs that can be removed easiest by removal of the carb from the intake, and careful work with a small chisel and hammer on the very corner of the base of the carb. (this is the easiest way, they can also be drilled and pulled out). the plugs should be located on the front of the base of the carb on either side of the fuel line into the carb.
cheers Last edited by JON70CST; 05-06-2010 at 10:18 PM. |
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05-06-2010, 11:31 PM
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#5 |
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Registered User
Join Date: Mar 2010
Location: Hydro, OK
Posts: 89
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Re: running rich
Don't think it's ever been rebuilt. Would this one have that dual capacity pump on it? The mileage really sucks.
It's an '85 GMC High Sierra with a 305. Last edited by ppbr2001; 05-06-2010 at 11:41 PM. |
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05-07-2010, 03:18 PM
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#6 |
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Registered User
Join Date: Mar 2010
Location: Hydro, OK
Posts: 89
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Re: running rich
17080213 is the carb number.
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05-07-2010, 07:35 PM
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#7 | |
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Registered User
Join Date: Mar 2010
Location: Hydro, OK
Posts: 89
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Re: running rich
Quote:
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05-08-2010, 12:50 AM
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#8 |
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Registered User
Join Date: Jun 2007
Location: Lethbridge, AB
Posts: 234
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Re: running rich
may as well, its pretty easy to do, just make sure you dunk it and leave it in carb cleaner for at least 8 hours and get all the crud out, plus it makes it look like braaaaaand new (once you have all removable pieces off of course) and just take your time when you reassemble it, you should notice a big difference.
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05-08-2010, 10:50 PM
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#9 |
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Registered User
Join Date: Feb 2010
Location: Norman, Ok
Posts: 64
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Re: running rich
Just a warning don't go nuts on the bolts when you put it back together when you rekit it the carb horn will warp if not careful
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05-10-2010, 12:14 AM
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#10 |
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BAD BOW-Silverado XST
Join Date: May 2000
Location: Senior Member from Austin, TX
Posts: 6,431
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Re: running rich
No carb should be adjusted without a vacuum guage!!
http://www.centuryperformance.com/tu...e-spg-148.html |
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