Hi Giovanni, you just unscrew them from the engine block. I undid them until they were just about open before adding the pipe... In the video you will see me twist the pipe and that turns the already loose tap until the liquid starts coming out. Hope that explains it. And I agree it's not explained that well in the video.
Hi! My Volvo Penta 5D A 1982 doesn't have a coolant or sea water strainer. The previous owner told me that the cooling system has been modified to a freshwater setup, so I don't need to do anything. I also don't see any container where coolant could be added. Is it true that I don't need to do anything, or do I need to add coolant in some way? How is this monitored? I've also seen some MD 5 engines with a shut-off valve with a red handle on the lower left when looking from the back, but on my engine, it feels like something is there, but the handle is missing. Was it removed for some reason? Perhaps because of the change from saltwater to freshwater cooling? Could someone clarify this for me or provide a link where I can read more about it?
Thanks for video I have a D1-20f, first time changing coolant I have drained coolant from drain nipples but only got coolant from top nipple have tried pushing cleaning rod to bottom drain point but with no luck. Any ideas before taking things apart. Engine only 400hrs on clock, will i need to look at heat exchanger next? have also tried to flush out. Many thanks.
Short term probably not a lot. Longer term you will get a build up of gunk that will restrict water flow and cause the engine to overheat at lower revs than normal - meaning you can't run the engine at full power. Plus there is increased risk of corrosion and potential failure of components within the heating circuit. Not replacing the thermostat is increasing the risk it will fail. That will also cause early overheating. None of which is fun if you're out at sea and need your engine to get home.
@@confidencesailing can we flush without running the engine? We are pouring water into the expansion tank n let it flow out thru the nipple. Is that considered flushing? We're doing many rounds of this.
@24 HourTravellers absolutely. flush away to your hearts content with the engine cold. Once you've filled it up again with anti freeze/corrosion inhibitor and sealed the system back up again... Then you can start the engine in idle and the water pump will circulate the new liquid and allow all the bubbles and air locks to eventually make their way to the header tank.
