misslynnie
Recruit
- Joined
- Jun 17, 2011
- Messages
- 5
1998 - Mercruiser 350 - V8 - 5.7L I/O
Having a problem with engine oil and lower part of motor overheating. I have cleaned both risers (not bad) and manifolds. Port manifold replaced, starboard cleaned (very good flow). Oil pressure maintains 40-50 psi. Motor and oil both cool when rpm's are lowered from 3000 to 1000 rpm's. Temperature was measured with I/F gun. Checked water flow at all hoses leading to and from thermostat housing (OK). Thermostat was replaced along with water pump before overheating.
What should be checked and or tested at this point.
Miss Lynnie II
Having a problem with engine oil and lower part of motor overheating. I have cleaned both risers (not bad) and manifolds. Port manifold replaced, starboard cleaned (very good flow). Oil pressure maintains 40-50 psi. Motor and oil both cool when rpm's are lowered from 3000 to 1000 rpm's. Temperature was measured with I/F gun. Checked water flow at all hoses leading to and from thermostat housing (OK). Thermostat was replaced along with water pump before overheating.
What should be checked and or tested at this point.
Miss Lynnie II