Question about 1997 BMW 328
Yes, if the water pump is bad, input hose will be hot output hose will be cool, but that also could mean a bad thermostat.
a way to see if the water pump is pumping coolant is to remove the bleed screw on the thermostat housing and see if coolant spews out.
But it overheats. may as well change out the water pump and get rid of the original plastic impellers. While you're there, replace the thermostat with a 12 degree cooler one and drill 2 3/16" holes 180 degrees from each other in the thermostat.
2.8L motors are sensitive to overheating. you can bust a head gasket this way in no time. Also warp that long cylinder head.
Posted on Jul 16, 2010
My 96 bmw was doing the same thing.I breeded the radiator,took about 15 min.works great.You must get all the air and bubbles out.<!-- from fixya rte -->
Posted on Aug 16, 2010
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Posted on Jan 02, 2017
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