Logo

87 OMC Cobra Over Heats as soon as it hits the water

davemel

New member
"we have an 87 OMC Cobra and i

"we have an 87 OMC Cobra and it over heats as soon as it hits the water. The over heating causes alot of light colored smoke to come from the right side of the engine. We have changed every part in the world and still cannot figure out why the engine is overheating...anyone have any suggestions? There is just not any water getting to the engine. We have changed out the impeller twice this summer, had some head work, new starter, new hoses...still over heats..."
 
"Which cobra? (4-6-8 cyl?&

"Which cobra? (4-6-8 cyl?)
Start with the 'basic'.
Disconnect the raw water hose going to the engine at the thermostat housing, crank/start the engine - is water coming?
If not -back to pump/hose drive to transom/ blockage in oil-cooler for steering servo (if installed). Does water come when idling or not at all?
We need a little more info."
 
a list of what "every part

a list of what "every part in the world" means would help.
Exhaust manifolds and risers on that list? that's my wild guess.
 
Back
Top