Question:

Hi, I’m having trouble with Duratec cooling system. The car is RWD Mk6 Escort and the rad is mounted low hence the rad top hose has to dip down. The water rail has no rear outlet to run heater or bypass hoses just has a switch to operate rad fan. The Mk 6 has a header tank with a air bleed to top of rad. Runs and cools perfect until sitting at idle when it starts to heat up. Do I require a extra bleed pipe from top of rail engine or bypass and heater pipes refitted. Or do I put on a David Craig pump, any thoughts would be greatly appreciated.

Answer:

All our vehicles are equipped with an electric water pump controlled by our ECUs. We do not use the mechanical water pump due to shortcomings in the Ford design. If you are using a mechanical water pump, great care must be taken and bleeds are always essential to prevent air locks. We have no diagrams for the mechanical system as this is not something we recommend. The diagram on our website is only for the electric water pump design.