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Since the blazers are known for the intake manifold leaks, it could be leaking back by the distributer and running down the block. Check around the entire manifold. Check your heater hoses from the fire wall to where they end. Check the lower radiator hose. If you cant find a leak in any of these places, maybe you can start it and let it get hot and look for steam. Just some suggestions. Good luck
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1999 BLAZER ZR2
KENWOOD HEADUNIT KDC-415S
KENWOOD PS-150 AMP
JL AUDIO 10W6
BOSE SPEAKERS 6X9, 4X6
PARNELLI JONES DIRT GRIP 31 X 10.5 X 15
K&N FIPK COLD AIR INTAKE
APC CARBON FIBER TAIL LIGHTS
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