Lioness
Active Member
Thanks for the heads up.
Any thoughts on how to check a water pump?
Yep, it muchly seems to be a sequence of gradually increasing price investigations...
1. Check seawater is flowing out the back (the jacuzzi is on)
2. Check seawater filter is clear.
3. If temperature rises when idling, consider checking thermostat (temperature levelled out with me, hinting that the thermostat and coolant is working, to some extent).
4. Check oil / freshwater coolant levels.
5. Change freshwater coolant.
6. Flush seawater coolant block with something that eats salt + other crud (Salt-Away arrived today).
7. Attempt high-pressure back-flush of inlet pipe (through the clear pipe, not through pump or engine).
8. Check water pump (unknown yet to me how to check this).
9. Lift out - Check in/out seawater pipework has no blockages.
10. Replace termostat and pump, just because we're running out of options.
11.... dismantle engine?
I think at #8 onwards, it might be a proper engineery type that I have to commission. Hopefully I won't need to get to that though.
To check water circulation pump -: 1) Look for any water leaks around it (put some white paper underneath it overnight?)
2) Listen to any grinding noises coming from it (bearings failing)
3) Check for any play in the spindle that connects to the belt pulley (may need to remove belt for this check)
4) Remove pump from block and check interior splines for damage/corrosion, they rotate freely etc.
Depending on which outdrive leg is fitted, the raw water intake is probably on each side of it, as you can't raise your leg you may not be able to see if they are clear? I have a go-pro we could use to inspect them and your water outlet through the transom shield without the need for a lift out, if that is of any help?





