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it could becoming from the intake or one of the o-rings from the heater hoses where it connects to the intake .you need to pressurize the system to pinpoint the leak

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โˆ™ 2009-08-12 04:22:32
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Q: What would be leaking in a radiator system on a 1991 Buick 3.0 engine when it seems to come from above the motor?
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