has anybody got any tips on how to confirm the water cooling system is working efficiently please? 1972 Mercruiser 120 with pre-alpha leg.
i know it sounds like a dumb question - but i would love to be able to visually/physically check i have a good flow (raw water cooling system) - and the exhaust water outlet is always below the water (obviously).
i guess i could run it with the muffs on out of the water - but its a riverside mooring and getting it to a slipway is a big job.
any tips/tricks/advice would be appreciated
the reason i ask is the temp guage climbs nicely to the middle and sits there - so i have never questioned it - but then just after a fairly gentle half hour run this afternoon i leaned into the engine bay to loosen and adjust the distibutor and put my hand on the riser - its quite hot - is that normal?
and then i have suddenly realised that i am trusting a 1972 temperature gauge with the entire wellbeing of my engines internals!
No hot rubber smells, no hot smells to speak of - just would like to have a visual that the flow is good