- 13 Jul 2002
I don't think this one has rubber end capsDoes the coolant appear in the bilge, or is it "disappearing"?
The pressure cap needs to be on - cooling systems run at around 4-7psi, this is done to raise the boiling point of the water so that no steam can be created in the engine during use (air is a poor conductor of heat).
I've only briefly skimmed through the posts, so may have missed something but if you are losing water and it's not in the bilges then, as mentioned above, it has to be going out through the engine. I'm also suggesting heat exchanger, the rubber end caps can be a source of leaks into the raw water system, which then exits out through the exhaust.