Reply To: CD12 strange cooling issue

[Fastwin18]

Today, unexpectedly, the ordered gaskets arrived! The new base gasket was 100% identical to the old one, that rules out that gasket.
I’ve replaced the exhaust cover, cylinder head and base gaskets. While doing that I inspected and cleaned all the water passages.
With the lower unit off (and the powerhead on), I connected a garden hose to the water tube. Although the garden hose inner diameter was considerably larger than the outer diameter of the water tube and a lot of water got past the water tube, water seemed to flow pretty good to the powerhead.
Then took it apart again, reinstalled the lower unit and power head  and….. suspense …….
Still the same problem 🙁
So that only leaves the water pump I guess. I’ll give that a closer look tomorrow.