Hi All, hoping you can help as this is driving me round the twist.
pumping from engine
but clarifier not getting hot..
I have a Volvo Penta
2003 that is salt water
only cooled, has the Y inside the engine
that diverts water
across the head
to the exhaust elbow
. From now on I will call this the cold water side. There is the other channel that circulates water round the engine, thus it getting hot, to the exhaust
. going to call this the Hot side.
The top of the engine there is a thermostat that opens about 60/70c. There is a pipe that goes from the upper thermostat housing to the exhaust elbow
, this has a diverter valve in it so it sends hot water either to the clarifier or straight out the exhaust. The issue I have is the "cold" side seems to have more pressure than the "hot" side and stops the hot side from flowing. There is lots of water coming out the exhaust BTW, very heathy amount.
If I change the diverter to go straight to the exhaust the whole pipe gets hot indicating that the hot water is flowing to the exhaust elbow and out. When i change the direction to the clarifier it just stops flowing. I have had all the pipes off and cleared the clarifier so know its not blocked, I have proved this point by sucking warm salty water into my mouth.. yuck.
First I attempted to reduce the flow of the cold side by adding a plastic washer in the inlet to the exhaust elbow, to no effect, I don't want to comprise cooling
the exhaust so wont reduce the diameter any more.
Next I have added an inline pump
into the return from the clarifier and that does not have any effect either.
The Run from the top of the engine to the clarifier is about 3m. (6ish M round trip). There is no way to relocate the clarifier or increase the ID of the pipework.
Any suggestions would be amazing.