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Diagram of vacuum lines for 1982 chevy 305 two barrel rochester carb

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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  • 1201 Answers

SOURCE: where does the vacuum advance line go on an old rochestor carb

Get a tee fitting for the size of the vaccum line and connect the advanced line into an existing line from the carb. Worked for me on one of my old cars.

Posted on May 31, 2009

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canbruce75
  • 1776 Answers

SOURCE: need a vacuum diagram for a ford f-100 with a 302

Check out the autozone.com website and register the truck. It's free and will give you access to an online repair manual for the truck. See if the vacuum diagrams are available there. Hope this helped and best wishes.

Posted on Aug 09, 2009

daves944
  • 1050 Answers

SOURCE: my 1985 chevy 305 gets 4mi to the gallon

Check your ignition timing at 3500 rpm you should have about 40 degrees of advance If not, something is sticking in the distributor, either the vacuum or mechanical advance. This will cause a big reduction in fuel economy. Also, check your tire pressure. The cfm on a rochester is really not important. The primary bores are so small and they are the only thing allowing the mixture in most of the time.

Posted on Jan 29, 2010

bsylvi321
  • 46 Answers

SOURCE: i need a vacuum line diagram

Use a industrial vacume tester, check each port coming off of the manifold, run your lines.

Posted on Apr 21, 2010

  • 227 Answers

SOURCE: need a diagram on hookng up vacuum lines back up

this truck has lot of vac hose that is nosence no needed you have to call me 9106545823 tomarrow

Posted on Jan 31, 2011

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To the intake manifold , from your choke, choke close incoming air is restricted, adjustment of the choke via thermostatic spring coil or electric heating element, loosen the 3 screws , as spring heats up the choke gradually opens, hope this helps

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Where can i find an online vacuum hose schematic for 1985 Sportscoach III motorhome has a 454 engine with Rochester 4bl carb. ?


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Where do the hoses connect to on 4 bbl rochester carburetor, it has no hoses attached, on my 79 350 motor


1979 chevy C1500
the vacuum setup varies,
by (california, Federal (USA) and export models)
where are you, or if in USA the under hood sticker shows if calif.or not.

if in usa, use the FSM (buy one used) or use alldata.com
on USA cars , (not sure starting year, this one is old) the vacuum
map is on the underside of the hood. (not not painted over,etc)

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1985 chevy c20 vacuum problems


on this truck the vacuum is pretty basic, im guessing you have a 305 (5.0) or a 350 (5.7), on the front of the engine compartment near the fan shroud somewhere (if it is still intact) you should have a diagram of all the vac lines
you probably have a quadrajet carb, if you are mechanical and patient they are not hard to rebuild

blowing out the carb with carb and choke cleaner isnt a bad idea either, have someone keep it running and slowly run like 1/4 to 1/2 a can down the carb spraying all around

Jan 31, 2013 | 1985 Chevrolet Chevy

1 Answer

My 1985 chevy 305 gets 4mi to the gallon


Check your ignition timing at 3500 rpm you should have about 40 degrees of advance If not, something is sticking in the distributor, either the vacuum or mechanical advance. This will cause a big reduction in fuel economy. Also, check your tire pressure. The cfm on a rochester is really not important. The primary bores are so small and they are the only thing allowing the mixture in most of the time.

Jan 29, 2010 | 1985 Chevrolet C1500

1 Answer

Need to find a manual for a rochester carb 4 barrel e4mc electric choke for a 1987 monte carlo 305 engine


You should be able to find or order a Haynes manual, part # 10230, for Rochester carbs at you local auto parts store. If not then faxonautoliterature has the GM service manual for your car and it will have a section on rebuilding carbs. Hope this helps.

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