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Thread: Weird Coolant Leak

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    Default Weird Coolant Leak

    1971 240 with SU's/header -- Coolant Water mist sprays out between my intake manifold and head -- Weird. A bit of acceleration and it becomes a little geyser. It is betwwen the number 4 exhaust and intake runners and has actually made a hole in my manifold gasket. Could it be a leak inside the intake manifold? There is a water passage there. Please help!!! Thanks!!!

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    Z geek at large FastWoman's Avatar
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    There aren't water passages in either of the manifolds. Maybe a cracked head? Is there any steam coming out of your exhaust?
    My last three sports cars while I still owned all three:

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    Thanks for the reply.

    Actually there is a water passage that travels through the intake manifold on the early z's. It passes right inside the carb mounts. I am trying to rule out everything possible befor pulling the head.

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    From your description it sounds like a cracked head or a breach in a coolant passage within the head to the exterior. Again based on your description, this does not sound like somewhere you should be seeing a coolant leak. It may be time to take it to a mechanic familiar with the Z for a second opinion unless you're up for tearing into this yourself to investigate.

    Pictures could be helpful.
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    Quote Originally Posted by ONZEDGE View Post
    Thanks for the reply.

    Actually there is a water passage that travels through the intake manifold on the early z's. It passes right inside the carb mounts. I am trying to rule out everything possible befor pulling the head.
    The coolant passage you speak of only runs near the carbs, never gets close to the head. I suspect a cracked head also.
    Arne - Former owner, HLS30-37705, 7/71, 905 Red
    Car blogs - 240Z - Porsche 911

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    Well -- it is a cracked head -- Anyone interested ina genuine E-31 paperweight?

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