jeanthomas
Cadet
- Joined
- Jun 26, 2015
- Messages
- 6
Started up my 1994 Volvo Penta 3.0 GL engine (24' pontoon boat with I/O) for the first time this week and water started leaking from the first hole on the bottom(left) of the exhaust manifold (pic2.jpg). Turned off the engine and started taking pictures. I cannot determine if there was originally a "core plug" (or freeze plug) in this hole. (pic4.jpg is the 3rd hole from left to right on the manifold and does not leak). I do not see any cracks. (pic3.jpg is the second hole on the bottom of the manifold. It does not leak) Last fall, both petcocks/plugs were removed and water was drained for winterization. The boat ran fine last summer. Should I just plug this hole with a heavy duty rubber expansion plug, put in a new core plug or do something else? How should I test for other potential leaks/cracks?