Jacobo.jajati
New Member
Good Morning
I have recently done service to the cat 3126 cooling system, changing the raw water pump as well as boiling the heat exchanger and replacing new expansion tanks/fresh water reservoirs. After doing this service i have noticed that a new about a foot to a foot and a half vapor trail behind the boat at cruising speeds has now showed up. This worries me as with the westerbeke genset the boiling of the heat exchanger and replacment of the pump actually yielded the opposite results.
Antoher interesting fact was that even before the updates to the engines cooling system the PORT engine at the dock always has a small trickle of water exiting the exhaust port and the starboard had a subtantial amoutn of water. If i run the engines anyhting above say 1500 RPM the flow equilizes. The interesting fact is that under way the starboard engine even before the cooling system service always gets up to running temp faster then the port. Now the starboard engine after the service at load and as recommend on the forum running at 2200 RPM hits right between the middle marker and the 200 on the stock engine temp gauge and the port never passes the middle marker on its temp gauge.
Im very confused and would love to hear any input reagarding this issue and if this is a problem or per design how the engines run.
BTW before the cooling system replacments there was never any vapor or steam coming from the engines under load and the same water flow from the exahust ports.
Thanks in advance for all you help and input
Jacobo Jajati
I have recently done service to the cat 3126 cooling system, changing the raw water pump as well as boiling the heat exchanger and replacing new expansion tanks/fresh water reservoirs. After doing this service i have noticed that a new about a foot to a foot and a half vapor trail behind the boat at cruising speeds has now showed up. This worries me as with the westerbeke genset the boiling of the heat exchanger and replacment of the pump actually yielded the opposite results.
Antoher interesting fact was that even before the updates to the engines cooling system the PORT engine at the dock always has a small trickle of water exiting the exhaust port and the starboard had a subtantial amoutn of water. If i run the engines anyhting above say 1500 RPM the flow equilizes. The interesting fact is that under way the starboard engine even before the cooling system service always gets up to running temp faster then the port. Now the starboard engine after the service at load and as recommend on the forum running at 2200 RPM hits right between the middle marker and the 200 on the stock engine temp gauge and the port never passes the middle marker on its temp gauge.
Im very confused and would love to hear any input reagarding this issue and if this is a problem or per design how the engines run.
BTW before the cooling system replacments there was never any vapor or steam coming from the engines under load and the same water flow from the exahust ports.
Thanks in advance for all you help and input
Jacobo Jajati
