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Thread: Vacuum issue? No brakes!

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    Default Vacuum issue? No brakes!

    my first post yay!! Unfortunately it's to start a weird situation...

    First off bought a 98 zx2 manual needed a master cylinder installed was already off the car. Ok no big deal installed it bled it..no brake pedal, sunk to the floor. Would stop..at slow speed but sunk. Bled the snot out of it nothing, bled it and the clutch because they said it was new as well..nothing, now here is what makes me think vacuum...

    It has the low idle rough running all zx2s get, I unplug then MAF runs fine...also I unhook the brake booster hose from the check valve...Brake pedal is back however I have no brakes and clutch acts funny. I hook the hose back up, lose pedal but all goes back to how it was...

    I'm at a loss can anyone steer me?

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    Default

    With the car off, can you pump the air out then start the car and see if you feel anything in the pedal? (google brake booster check)
    Double check you're not leaking fluid somewhere as well (clutch would be affected as well).
    Quote Originally Posted by zxtwou2 View Post
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    Default

    ^^^ agreed.

    Also check the clutch master, they can and will leak inside the car ( easy to check, follow the clutch pedal to the ROD that leads to the firewall and it's at the end of that).

    Also do you know if the master cylinder was leaking externally or internally?

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    Default

    Brake is hard like normal car off. I crank it sinks to the floor


    Quote Originally Posted by Mimino View Post
    With the car off, can you pump the air out then start the car and see if you feel anything in the pedal? (google brake booster check)
    Double check you're not leaking fluid somewhere as well (clutch would be affected as well).

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    Default

    I'm not losing any fluid at least I see from the master cylinder. I don't know why it was bad just wasn't installed when I bought the car. He had replaced calipers and pads n that's what was left for him to replace.


    Quote Originally Posted by KLZEEscortGT View Post
    ^^^ agreed.

    Also check the clutch master, they can and will leak inside the car ( easy to check, follow the clutch pedal to the ROD that leads to the firewall and it's at the end of that).

    Also do you know if the master cylinder was leaking externally or internally?

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