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#1
07-18-2008, 03:26 AM
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Carb adjustments
new Caprice owner. 85 model with 305. 4bbl quadrajet. I think the choke is staying on too long, and needs to be adjusted. anyone have quick instructions on how to do that? may be asking way more questions till i can find a good manual that i like. thanks for any info
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#2
07-19-2008, 03:16 PM
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Re: Carb adjustments
Once the engine is running and the alternator is charging, the choke heater should have 12V applied to it (not including 1985 Canadian models). Upon the choke heater getting power, the choke thermostatic spring should open to full within about two minutes. You can test this without running the engine by applying power to the choke heater.
If the choke thermostat expands to full but the choke plate doesn't open, clean and lubricate the choke linkage and high idle cam.
__________________
Permanent seat assignment on the Group W bench... Automotive Forums Survival Guide
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#3
07-19-2008, 05:25 PM
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Re: Carb adjustments
You can also set the choke to 'lean' or 'rich' by turning the plastic choke cover, if the plastic cover is held on with screws and not rivets.
__________________
1988 9C1 - Modified LM1 @ 275HP/350TQ - TH700R4 - 3.08 8.5" Disc Rear - see it at http://www.silicon212.org/9c1! 2005 Crown Vic P71 - former AZ DPS - 4.6 liters of pure creamy slothness! 1967 El Camino L79/M20 old school asphalt raper Remember - a government that is strong enough to give you everything you need, is also strong enough to take everything you have.
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#4
07-19-2008, 11:23 PM
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Re: Carb adjustments
Quote:
these 305 cu carbs have choke spring that get damaged by constant heat from the 12 volts applied to them...yes they can be adjusted but this is not a fix.....as winter to summmer you will find the choke not to work correctly...rivits can be drilled out and replaced with screws to adj. choke.. to repair,,,,,,,,, choke spring needs replacing....
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#6
07-20-2008, 05:28 AM
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Re: Carb adjustments
That would mean those intended for sale in Canada, meeting Canadian emissions requirements. Many made in Canada were for U.S. sale, meeting either U.S. federal or California emissions requirements. Many made in the U.S. were for Canadian or export sale, and thus were built to meet those requirements. The VECI label under the hood should specify which type you have.
From my information, some 1985 export models may have a divorced choke thermostat.
__________________
Permanent seat assignment on the Group W bench... Automotive Forums Survival Guide
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