have an í88 Johnson 90Hp VRO motor on our boat.
For the past two years, when I start the boat and leave from our
dock, it runs at idle for five minutes, then the over heat alarm goes off.
So we would sit in the boat for about 10 minutes until it cooled
off, start fine, and work fine all day.
To take care of the problem, I assumed the intakes were plugged
with moss, so instead of a slow idle, I would put it into a fast idle
until it could be ferried out of our long channel to the main lake where
it could be put on plane. No
week as we were taking the boat off the lake for the 4th (our
lake is a great one to get off on the 4th because of the HIGH
boat traffic) I was running wide open and it seized (the alarm did not
sound). However, at the time
I didnít know what was wrong as I had never experienced that before.
After 30 seconds, it cooled off, started fine, and ran fine to the
night I went out fishing. The
boat ran fine at idle and troll speeds.
I did not put it on plane until the end of the night, after dark of
course, when it again lost power and died (no alarm again).
I was able to make it back to the dock, without incident, at idle
is going on with this motor? Is
it a water pump?
it have anything to do with the oil?
It doesnít seem to be burning a lot of oil, and the bulb is
always hard on the oil tank, but I could just be paranoid at this point.
in advance for your advice
like your motor is "dead". By dead, I mean after the seizure the
damage is done and every minute you run it after, will increase the repair
cost exponentially. Have it rebuilt, as the piston or pistons are
permanently damaged. Don't try to run it as this will only cost you
hundreds more. Have a new waterpump and VRO Pump installed during the
rebuild. It's going to take a couple grand to fix this, so sorry for the
bad news. Cut your losses and take it in. Prepare for the worst.
Please submit whatever questions you have to IHRTechTalk@yahoo.com. All questions and answers selected will be displayed on this page as they come in. Note: though all boaters are welcome, priority may be given to I.H.R. members. Randy can not be held responsible for any advice given. Though his information and expertise is second to none, he has no control over what you do with your boat. It is up to you to boat safely and act responsibly, and his advice is only to be used as a guidance for your high performance boat/motor of which you are the one responsible for the risks involved.
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