Col
New member
I agree with all the above suggestions, just 3 things to check
1/ circulation pump- I have seen these on several engines where the impeller is slipping on the shaft ( At low speed it can cope, but the higher the revs, the more the load on the pump so it slips ) bit like a duff clutch on your car !
2/ T/stat -see all previous postings.
3/ Exhaust can be partially blocked. Run it at high revs till the gauge starts to rise, should have plenty of cool water exiting exaust outlet, If flow is hot/reduced check for blockages. Also check if water hoses are " ballooning " sea water needs to get out as well as in.
Best of luck !
let us know what you find.
1/ circulation pump- I have seen these on several engines where the impeller is slipping on the shaft ( At low speed it can cope, but the higher the revs, the more the load on the pump so it slips ) bit like a duff clutch on your car !
2/ T/stat -see all previous postings.
3/ Exhaust can be partially blocked. Run it at high revs till the gauge starts to rise, should have plenty of cool water exiting exaust outlet, If flow is hot/reduced check for blockages. Also check if water hoses are " ballooning " sea water needs to get out as well as in.
Best of luck !
let us know what you find.