Question about 1985 Cadillac Eldorado
Installed new water pump having problems with the tube which crosses from thermostat housing to manifold. Tube had rust in o-ring areas. Wire brushed tube then placed a thin bead of silicone on tube areas where o-rings are placed. Installed o-rings then another thin bead of silicone. Installed pump, thermostat housing and cross tube as one assembly. Leak seams to be coming from manifold side. Question’s I have: can I remove thermostat housing and tube without pulling the pump again??? Should I replace the tube with a new one if one is available from the dealer still? Tube dose have some pitting but the silicone should have helped this, maybe I should not use the silicone. Or should I try to re-clean the tube, seal again and re-install thermostat housing and tube again. I am a seasoned mechanic and I have to say this pump assembly is one of the poorest engineering I have ever seen! Silicone is red high temp.
You should be able to remove the tube without removing the water pump again. If a new tube is not availabe you can use JB weld to fill gaps and pit holes. Make sure its not the intake manifold gasket that's leaking at the corner.
Posted on Jan 15, 2009
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