Boat Repair/1984 260 merc crusier
Expert: chris Wethered - 5/7/2008
Questionwhen the engine is at idle speed it over heats, when you rev it up it cools down to normal temp......do i need to replace the impeller ? how do i do that?
AnswerHi Pat,
you need to check the impeller for wear and tear. You also need to make sure the cooler unit is not blocked, making the engine over heat. To get at the impeller you need to remove the screws on the lower unit.
You first off have to put the engine on a secure stand. If the lower unit does not come off easily, then you should use some spray lub and leave it over night. Once you have the unit off, follow the instructions provided to change the impeller.
If you have not over hauled the engine in over a year then i advise you do.
Chris
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