Logo

1980s 50hp mercury pump question

golferman

New member
Need some help answering kind simple a question

Will the water pump operate when the engine is only used with throttle only (ie gear is disengaged)
or does it have to be in neutral or in gear to operate
 
When the motor turns / runs the water pump should be working !!-----The shifting is done along the propeller shaft.----The pump is driven by the driveshaft.----Why the question ?
 
Being having problems with the pump on muffs, changed it, ran compressed air throw the telltale, it seemed to be clear. When I run it on muff nothing and when its in the lake it pumps great.
 
There is not really much that you can do wrong with one of these pump repairs.----That is my opinion.-----If you are worried you need to install a water pressure gauge.----Any boat shop will be glad to help you pick one out suited for your motor !
 
If you're running it in a small barrel or on muffs, it can be starved for water and run hotter. If you run the boat on the trailer at the ramp you can be assured it's okay or not.

This is also a great way to determine if the motor is "taking gas" correctly and making ful power. Just don't hold her wide open for more than a few seconds.

Jeff
 
Back
Top