Oil leak at fuel pump

[Richard Farrant]

Originally Posted by andrew honychurch

thanks Richard. It has been very hot since the leak started so I think either the thermostat in the cooler has stuck, and reduced the flow causing the relief valve to operate, or as mentioned in my last post maybe I followed the schematic and hooked up the cooler pipe correct for the TM diagram, but the wrong way for my system which as you can see it exactly the oppostite way around.

Very odd!! On top of the Dingo playing up, I am not having a good few days!

Andrew,
Are you positive there is a thermostat in the cooler? Not one in a Windsor, although that means nothing. The way it works is when oil is cold, it has higher viscosity and lifts the relief valve in the t-piece, then as the oil warms and thins, goes straight through the cooler.