Question about Chevrolet V20

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I need a diagram of the vacumn system for my chevy van 305 4 brl

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  • hvail57 Jul 29, 2009

    I have a Haynes manual and it does not show a vacumn diagram,where can I see these diagrams you talked about? I might be able to see which one best fit my vehicle. Also I will try Autozone and see if that helps.



    Thanks Hank

  • hvail57 Jul 29, 2009

    Hi Ginko, The van is a 1984 it has a 4 brl quadrajet carb,it has air cond. I don't know if it will help but the vin # is 1GCEG25H2E7205426. It looks like the ones you sent might help I will check it out, I am not on line all the time either so I will get back with you



    Thank Hank

  • hvail57 Jul 30, 2009

    I was talking to ginko before and he had a couple ideas and I was waiting to here back from him, I would just as soon wait to here back from ginko





    Thanks Hank

  • hvail57 Jul 30, 2009

    I am looking for someone called ginko he was helping me earlier today and I sent him more info and was waiting to here back from him.

    Thank you Hank

  • hvail57 Jul 30, 2009

    these ideas are things anyone would know that's why I tried finding out through fixya but I don't need the easy ideas I need to find diagams

  • hvail57 Jul 30, 2009

    no that is the emission system that's posted under the hood I can see mine just fine

  • hvail57 Jul 30, 2009

    do you know who ginko is ? Have him contact me he was on the right track yesterdey

  • hvail57 Aug 04, 2009

    My van is a 1984 305 5.0 liter 4 brl quadrajet carb with air hope this is what you need if you need anything else just ask.



    Thanks Hank

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5 Answers

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  • Master
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If you can't see this,I can email it.
I need a diagram of - 9924f6f.jpg

Posted on Aug 04, 2009

  • Randy Hough
    Randy Hough Aug 05, 2009

    Did you get the email?

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  • Master
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I have the diagrams you seek but, i will need to verify the liter of the engine. Please relay the correct engine size and liter please so that i may post the correct diagram.

I understand it is a 305 4 brl but, i will need the liter as well.

Posted on Jul 30, 2009

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  • Master
  • 2,185 Answers

Usually, VACUUM DIAGRAMS can be found PASTED to the underside of the hood. Take a paper towel to wipe off grime to be able to find it.

Also check the under hood side of the finder wells, or along the frame in front of the radiator.If this doesn't help a Chevy dealer can give you one in a jiffy if you just ask.

Posted on Jul 30, 2009

  • virtualhost
    virtualhost Jul 30, 2009

    Hello,

    If you are willing to buy a book, you can purchase this:

    http://www.repairmanual.com/catalog/CH28...

    Chilton, General Motors Full-Size trucks 1980-1987

    Here are just a few of the items in this manual that make your repair jobs easier
    • Expanded index to quickly locate information
    Wiring diagrams
    • Diagnostic charts
    • Troubleshooting charts
    • A glossary to identify those unfamiliar terms.

    It can also be purchased at NAPA parts stores.

  • virtualhost
    virtualhost Jul 30, 2009

    Hello,

    Here is the diagram:



    Hope this is what you are looking for.

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  • Chevrolet Master
  • 19,396 Answers

There are many different diagrams for Chevy 305 4 barrels carb engine. Picking a diagram from the Internet you risk to get the wrong one.

To start check if there is the vacuum diagram pasted under the hood, normally you should find the vacuum diagram in there.


You can also try entering your vehicle details at Autozone. Then chose the vehicle repair guides link, you will find the link at the bottom right hand corner of the page.There you can get the right diagram.


If it is not there you can go to any Chevrolet car dealer, and ask thema photocopy of the vacuum diagram for this truck, usually they do thisfree of charge.

A good alternative is also buying the repair manual for your car, that is always the best choice if you want DIY. See haynes.

Regards.

Posted on Jul 29, 2009

  • Ginko
    Ginko Jul 29, 2009

    Hi Hank,

    Try giving me the year and any detail on model, I will see if I can get the vacuum diagram for your Engine.

    Pls give me a couple of hour to answer, I am not always online.

    Thanks.


  • Ginko
    Ginko Jul 29, 2009

    Check this diagrams, this is a diagram for 1976 350 V8 engine-4bbl with EFE and AIR injection systems:



    This instead is
    1976 350 and 400 V8 engine-4bbl without EFE or AIR injection systems:



    There are more diagrams, let me know if one of those is the right one, and eventually leave feedback.

    Thanks.


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  • Master
  • 1,124 Answers

The "Chilton Book" is a great asset that has diagrams and how too on most all the sytems including breaks, wiring, vacuum, eletrical components etc..
They make a book for just about every year make and model.

I do not have a vacuum diagram in my data..

Try here --- http://www.auto-repair-manuals.com/auto.html?gclid=CJqi9NSQ_JsCFQY9xwodKVfQTQ

I hope this helps ;o)

Posted on Jul 30, 2009

  • Carl
    Carl Jul 30, 2009

    Yes - it might be a good idea to run by your local parts store and thumb threw a diferent book like Chilton to see if it has what you need..



    FYI;

    If you post a question - it could get a response from anyone on here as I did..

    We work on a points sytem here..



    If you want to ask someone specifically - you can easily see if they are online here and ask that person..



    Thank you..

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