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Thread: Quick Question (Hopefully)

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    Registered User 240Z240Z240Z's Avatar
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    Exclamation Quick Question (Hopefully)

    I took the pipe from the brake booster off of the intake manifold and sucked on it. I couldn't make a vacuum, and I could hear the inline valve fluttering. Is my booster leaking, or is it suppose to work that way for some reason. I guessing the boosters got a rust hole in it and that would really explain a lot of things!
    1972, White w/red, 4 speed, 77K, All original.

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    Registered User Nissanman's Avatar
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    If the booster vacuum tank had a hole in it then your engine would be sucking extra air and not running well.
    Is this the case or do you have brake problems too?
    Nissanman - just trying to help
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    Registered User 240Z240Z240Z's Avatar
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    Quote Originally Posted by Nissanman View Post
    If the booster vacuum tank had a hole in it then your engine would be sucking extra air and not running well.
    Is this the case or do you have brake problems too?
    Exactly. I'm trying to find the gremlins that are making my car run poorly.
    1972, White w/red, 4 speed, 77K, All original.

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    Registered User Nissanman's Avatar
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    Pinch the hose closed between the manifold and the valve and see if the engine behaves better.
    Or remove the hose at the manifold and plug the nipple.
    The hose may have a split in it somewhere.
    If the booster tank leaks then your brakes won't feel any different with the vacuum hose inoperative.
    Nissanman - just trying to help
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  5. #5
    Registered User 240Z240Z240Z's Avatar
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    Quote Originally Posted by Nissanman View Post
    Pinch the hose closed between the manifold and the valve and see if the engine behaves better.
    Or remove the hose at the manifold and plug the nipple.
    The hose may have a split in it somewhere.
    If the booster tank leaks then your brakes won't feel any different with the vacuum hose inoperative.
    I removed the booster pipe and plugged the intake port and it ran better, but the brakes were harder to use. I'm guessing it has a small leak in the diaphragm.
    1972, White w/red, 4 speed, 77K, All original.

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