hey all, this may sound like a dumb question, but i have a rebuilt motor in my 800 i got and tonight i put my air lift on the radiator to pull a vacuum on it to fill it with coolant for the first time and it pulls a vacuum right though the weep hole. so my first thought was the seal is bad even though its supposed to be a rebuilt motor, but my question is does the seal work on pressure ? or am i right in saying the seal is no good because i can pull vacuum though it, thanks in advance
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