Last weekend I wanted to make a trip with my Morgan Roadster 3.7 on some passes. Unfortunately, on the very first pass (close to the top) I recognised cooling water to the windshield. I stopped immediately and then I saw that the cooling water splashing out of the pressure relief valve in the cap of the coolant tank. After the cooling water was a little cooler, it has finished to splash out. I had to refill 3 litres of water.
I have discarded my original plan and drove back home. On the way home, the cooling water is not over cooked. Now of course I'm confused why this is happening, and whether it can happen again. My Morgan was last year for repairs in their workshop. Two cooling tubes had leaks. But sins then I drove 2000 kilometers without any problems.
What's also funny. The temperature gauge was at boiling never above the central display area. If the cooling water is leaking from the pressure relief valve, it ought to be hotter than normal, and the cooling water thermal display should get into the red zone. But it didn’t…
Has anybody an idea?
