Ok, I've kept my XF running with bandaids and bits of strings so here goes..
take a garden hose, with all of the engine hoses off plug the garden hose into the
the front heater inlet, check that water comes out of the outlets, start plugging up the outlets that run the fastest (clearest flow) keep plugging until you see one that is not flowing, (indicating a blockage)
If no blockage then connect the bottom radiator hose, check the flow again, connect the top radiator hose, with the cap off you should have the same amount of water overflowing as going into the heater line, you should now have a completely full water jacket.
Keep the garden hose flowing slowly, start the engine, watch the temp, if it doesn't rise then assume problems with heater radiator blockage or air lock, ( you have an airlock bleed nipple on the water pump housing) flush the heater radiator core,
check the T junction on the inlet side near the firewall, (blocks easily and stays that way)
Hope this helps
Originally Posted by jed
Just a quick question about my XF 4.1 crossflow motor. It was rebuilt and I have put the engine back in the car and it overheats. Not from taking it for a drive, but within minutes of starting the car and just with it idling it is getting hot. I have tried all the usual like: Checked all waterpipes, radiator, head gasket, distributor etc etc etc.
I am at wits end as to what to do next. Any suggestions would be great.
Has anyone else had this problem?