I have a 99 Z3 2.5 liter 6cyl with 95000 miles, I have no history on the car, I am planning to replace the heater inlet pipe and water pipe (plastic parts) has anyone replaced them on the 6 cylinder. My bentley manual does not seem to cover the subject. From what I have read, the intake manifold must be removed, are there any special precautions that should be taken when replacing the plastic water lines? I had read somewhere the water lines on earlier cars were metal. if so could a earlier metal pipe be used as a replacement? How complicated is the job of removing the manifold and replacing the lines?
Thanks for any information.