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Noel Schembri
Noel Schembri, Marine Technician
Category: Boat
Satisfied Customers: 1951
Experience:  Advanced technical diploma
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My 89 omc 350 is overheating at idle I have replaced the

Customer Question

my 89 omc 350 is overheating at idle I have replaced the impeller, housing, cage, plate, o rings,gaskets ,
Submitted: 2 years ago.
Category: Boat
Expert:  Noel Schembri replied 2 years ago.

Hello my name is ***** ***** I will assist you. Did you replace the thermostat? If yes then next step is to check the exhaust manifolds and risers for any blockages. When was the last time they were replaced? as they need to be replaced every 4-5 yrs.