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  1. #1
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    Default Collapsed vacuum hose.

    Hi all. 2002 SE Zetec Dohc.
    Have a collapsed vacuum hose, need to know some specifics to tell the guy at the parts dept. The hose goes from the back of the intake, right below the throttle body, and runs to a pipe under the coil. Whats the official name for this hose? Also, I've never seen a clamp like the one on this hose. Doesn't appear to be the squeeze type or the regular type you loosen with a screwdriver. Almost looks like ya gotta pry it off. Any suggestions?

  2. #2
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    Default Re: Collapsed vacuum hose.

    PCV (positive crankcase ventilation) hose.
    Very common problem that they collapse when old.
    Also, you have to cut the crimped clamp (not reusable) of the hose to manifold and use a new hose clamp; screw or squeeze type-doesn't matter.
    2004 ZX3 2.3L Pitch Black, Manual - to be installed: Cosworth IM, CFM 67mm TB, AEM intake ,OBX header, Borla exhaust, CFM UPD, CFM BSD, Crane stage-1s, 4.06 FD, Torsen T2, Exedy OEM clutch
    2001 ZX3 Infra Red, Automatic - returned to stock

  3. #3
    Super Moderators GapBoyPCS's Avatar
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    Waterloo/Toronto, Ontario, Canada
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    Default Re: Collapsed vacuum hose.

    Just an overall question: How are you folks replacing this hose? Are you attacking it from above or under the car?

    I'm thinking of replacing mine out of maintenance (hose hasn't been replaced since new)
    Richard
    2002 ZTS | Sangria Red |
    Over 521,000 km and 323,000 miles
    2012 SE Sport | Red Candy | Over 53,000 km and 33,000 miles

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  4. #4
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    Default Re: Collapsed vacuum hose.

    I did mine from above, snaked my arm down there.
    2004 ZX3 2.3L Pitch Black, Manual - to be installed: Cosworth IM, CFM 67mm TB, AEM intake ,OBX header, Borla exhaust, CFM UPD, CFM BSD, Crane stage-1s, 4.06 FD, Torsen T2, Exedy OEM clutch
    2001 ZX3 Infra Red, Automatic - returned to stock

  5. #5
    Senior TEAM Member
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    Default Re: Collapsed vacuum hose.

    Buy the factory parts, they're perfect. They just get old, hot and brittle over time. The front one is about 4 bucks, and the rear is around 6 bucks. Cheap enough to do it right. Common problem. I was able to get to both from the top fairly easily. Good time to replace the pcv too

    g
    Democracy is two wolves and a lamb voting on what to have for lunch.
    Liberty is a well-armed lamb contesting the vote.
    - Benjamin Franklin, 1759

  6. #6
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    Louisville, KY
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    Default Re: Collapsed vacuum hose.

    Hi all. Thanks for the info. Just replaced mine and went in from underneath. Plenty of room.

  7. #7
    Junior Member
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    New Haven, CT
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    Default Re: Collapsed vacuum hose.

    Did you have an issue with rough idle? Did replacing the collapsed hose this fix it?
    your mom

  8. #8
    I Now Post Stupid **** Jibberish18's Avatar
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    Default Re: Collapsed vacuum hose.

    Did you have an issue with rough idle? Did replacing the collapsed hose this fix it?
    Did you notice the last post was from 2007?
    "If You Never Had The Bad Times, How Would You Know You Had The Good Times?" -DEATH


  9. #9
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    Default Re: Collapsed vacuum hose.

    Still a good topic. Someone else may have found this post as I did and have an answer.

    I replaced my collapsed hose and the pcv valve and my idle is very solid when before it was lumpy at times.
    your mom

  10. #10
    TEAM Member Yachapohld's Avatar
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    Default Re: Collapsed vacuum hose.

    I just replaced my collapsed hose, and it helped smooth my idle.

    I keep reading that the clamp has to be replaced, but I was able to reuse mine.

  11. #11
    [FJ] Specialist Johnny_P's Avatar
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    Default Re: Collapsed vacuum hose.

    ^ I think they suggest that because the stock clamp is a complete pain in the ass since its one of those hold-it-with-a-plier two tab clamp thingies.

    I had an extra screw-type hose clamp I used. Really just as long as you put something on there to hold it you're good.
    '12 Trek X-caliber // '11 Cervélo R3
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  12. #12
    I Now Post Stupid **** Jibberish18's Avatar
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    Default Re: Collapsed vacuum hose.

    I think the person who replaced mine didn't even use a clamp. Guess he figured the vacuum would hold the hose in. I think it's been okay for years now.
    "If You Never Had The Bad Times, How Would You Know You Had The Good Times?" -DEATH


  13. #13
    TEAM Member Yachapohld's Avatar
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    Default Re: Collapsed vacuum hose.

    Quote Originally Posted by Johnny_P View Post
    ^ I think they suggest that because the stock clamp is a complete pain in the ass since its one of those hold-it-with-a-plier two tab clamp thingies.

    I had an extra screw-type hose clamp I used. Really just as long as you put something on there to hold it you're good.
    That's what I was thinking. But I didn't have an extra screw-type so I just kept trying.


 

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