View Full Version : Engine Temperature 4JH4E

06-03-2010, 08:00 AM
We took our new boat home this weekend ran 4-5 hours at 2500 - 2800 rpm
and never got above 140 degrees infared themoter read 143. Motor 4JH4E has about 130 hours on it. We are in the Northeast so water is still cool low 60's. to upper 50's Am I running to cool should I be running at about 180