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1983 chevy caprice carburetor
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67eleanor
User
May 14, 2011, 3:05 AM
Post #1 of 2
(4177 views)
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1983 chevy caprice carburetor
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hey bros.
i own 1983 chevrolet caprice classic wagon 305cid 4bbl.
vin no. 2G1AN35H4D1155398.
completly stock. i try to fix the old carb. many times but its still get damage.
i went to a junkyard to buy agood condition one but i didn't find the same
model. i bought a electronics shocks carb. my old one was automatic.
i think my car is not full option. in the picture below if i connect no.4 wire
to no.2 socket. and no.3 wire to no.1 socket its will work fine or not.
i have problem in the engine the oil get on my spark-plug so thers ablack smoke
com out from the car if u can see i disable the old shock and make the front 2 barrel open
all the time.
i get confused in this any one can help please.
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  !!!!!
_________________________________________
I'm chasing to freedom in new york city.
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
May 14, 2011, 4:38 AM
Post #2 of 2
(4168 views)
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Re: 1983 chevy caprice carburetor
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There may not be tons of techs left who are real good at adjusting Quadrajets up right. The common problems were the choke pull offs leaking and not doing there thing. The front barrels are opening, the choke plate probably isn't.
You need a usually hand held vacuum pump to check front choke pull off. It should pull back and hold. With throttle tripped so step cam so it will close completely. With vacuum applied to front choke pull off you need to measure how far it opens either by degrees or can use drill bits as a measuring tool.
Rear choke pull off only opens the choke a tad more at part warm up and can really be plugged off and work well without it.
Choke heater must work. Just ground carb and add 12v to it's prong where it plugs in and you can see it open the choke plate and feel the choke spring get warm.
Can't adjust idle mixture on these without knocking out the hardened steel plugs over them to even clean them out.
If that's a melted wire to electrically heated choke the melted then the choke heater may have shorted but can be replaced even though they used rivets on these you can drill those out and new one will come with screws.
These are great carbs when all settings are right and vacuum pull offs work but very fussy and not for everyone.
Big bucks for a new one and tricky to cheaply plain redo an old one which is gaskets, needle valve and clean the heck out of it with correct adjustments.
If not real familiar with them you are spinning your wheels trying to fix it and need some help,
T
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