jr_gray
New Member
- Dec 11, 2014
- 8
- Boat Info
- 1983 SRV225 CUDDY express cruiser
- Engines
- 228 mercruiser
5.0 efi
I have a 1998 DA 240 with a 5.0 mpi engine. It has a closed cooling system on it. Engine will over heat, to 200+ degrees when at higher speeds. It has new impeller on alpha outdrive, new t stat, new sending units. Heat exchanger is clear and risers, manifolds and elbows all run cool. It seems as though engine coolant (anti freeze) is not flowing efficiently enough through engine. Any help would be helpful, cause I'm pulling my hair out trying to figure this out! TIA.