where does the vacuum line for the choke go? - Team Camaro Tech
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post #1 of 11 (permalink) Old May 2nd, 04, 06:35 AM Thread Starter
JTM
 
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on an 86 350. rochester quadrajet? its in my 72 firebird but i cant seem to find any open vacuum ports. thanks.
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post #2 of 11 (permalink) Old May 2nd, 04, 08:00 AM
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Matt Jones
 
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Does this Q-Jet have a throttle position sensor?

If it's the truck Q-Jet, I assume you are talking about the rear vacuum break that opens the choke plate when the engine gets running. If it is indeed that, then it plugs into the port that is at the rear of the carb next to the power brake vacuum fitting. It's in the baseplate, I believe.

Matt Jones
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Art Morrison Ent. Inc.
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post #3 of 11 (permalink) Old May 2nd, 04, 08:01 AM
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Matt Jones
 
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I'm back. Out of curiousity, what the number of that carb, and what rods and jets does it have?

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Art Morrison Ent. Inc.
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post #4 of 11 (permalink) Old May 2nd, 04, 04:11 PM Thread Starter
JTM
 
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52179 is on th etop part and 52062 is on the baseplate, there is plugged line right next to the break booster line. ill hook it together and see what happens, it was plugged with a short piece of line and a golf tee. also now when i try to start my car it sound slike my engin eis dragging, like barely able to move the cylinders, yet i am able to move the crank pulley with my arms. does this mean my engine is messed up? its done it once before but started in a few seco9nds later. now it wont even turn over.
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post #5 of 11 (permalink) Old May 2nd, 04, 04:25 PM Thread Starter
JTM
 
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also, the nipple on the choke is twice as big as th enipple on the rear baseplate on the carb, do i need aspecial hose? kuz no way in heck woul di be able to strecth a line over that... otherwise id need some sort of clamp and use a larger hose...
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post #6 of 11 (permalink) Old May 2nd, 04, 04:32 PM Thread Starter
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oh, and the carb has absolutly no elctrical hookups, the only electric in the whole engine is the HEI distributor, starter and alt.
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post #7 of 11 (permalink) Old May 3rd, 04, 09:41 AM
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if you are talking about the line that comes off the round canister on the passenger side of the carb, then that gets hooked to a hardline that has exhaust from the intake manifold run thru it.
there are 2 hard lines that need to be hooked up- one that goes from that nipple to the heat crossover, and one that comes out of the crossover right next to that one that goes to the a nipple on the back of the carb, right under the air cleaner flange.
there is vacuum from inside the carb that pulls the filtered air it gets from the back of the carb thru the heat crossover, which is then heated and pulled thru the choke coil into the carb. this heats up the coil and opens the choke as much as it needs. this is the best choke setup ever devised, and i would definitely try to get it working right. it's way better than a silly electric choke setup.
if you don't have any fittings coming out of the intake for that, you can get an electric choke coil for a newer car or truck and put it into the hot air choke housing. just plug the vacuum nipple on the housing and the fitting on the back of the carb, hook up a switched 12 volt power source to it, and you have an electric choke.

you don't plan sincerity.
you have to make it up on the spot.

wanna hear about 20 years ago when i was too smart to know any better?
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post #8 of 11 (permalink) Old May 3rd, 04, 06:47 PM Thread Starter
JTM
 
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i dont see any hardlines anywhere near the carb. by hardline im assuming u mean the hard metal lines... ill check my intake again, but i dont think there was any lines or nipples on it either.. although it is a stock intake.. ill check tomarrow when it gets light out.. thanks again [img]smile.gif[/img]
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post #9 of 11 (permalink) Old May 4th, 04, 09:10 PM Thread Starter
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is it correct to hook the choke up to the EGR valve?
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post #10 of 11 (permalink) Old May 4th, 04, 11:51 PM
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nope

you don't plan sincerity.
you have to make it up on the spot.

wanna hear about 20 years ago when i was too smart to know any better?
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post #11 of 11 (permalink) Old May 5th, 04, 04:33 PM Thread Starter
JTM
 
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got an electric choke, problem solved... [img]smile.gif[/img] now on to the timing, i found out that my centrifical advance is not working.. need to pull the ditributor and get it moving again.
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