matthew daley
Seaman Apprentice
- Joined
- Nov 27, 2011
- Messages
- 49
hi ive got over heating trouble on my omc 4.3 v6 and the risers are badly coroded ive spotted a hole in the exhaust side under neath a allan key blank is it ment to be there as its perfectly round iff so whats it for as its in both risers hope you can help cheers mat