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@lynx
Boring ford focus 1.6 zetec se (sigma) engine....tracing the water leak. These engines are different to the normal zetec, the difference is clear the normal zetec has the exhaust and the front while the Zetec SE has the inlet at the front. Also different to 1.6 zetec fitted to the sport/street KA, as that is an 8 valve.
Found that both the water pump and plastic thermostat housing show signs of a leaking. The waterpump also has noticeable play, enough you can feel but the bearing feel smooth. Yeah, I know that you shouldn't turn a new water pump, but this is old and shows signs of leaking so it is going to be replaced. The water pump doesn't run off the cambelt but once you get to the waterpump, the cambetlt is exposed so easy enough to lock the crank and cams and replace the belt and tensioner.
Old water pump doesn't have any manufacturers name on the pump, but there does seem to be an excess of black gasket goo. The old paper gasket does have a very thin line of sealant that the new gasket doesent. So am deciding if I should use a fine syringe and very lightly smear some instant gasket. If for nothing more to make sure the paper gasket says in place when I mount the pump. There can be an issue of the paper gasket either not seating correctly orbeing damaged and then causing a leak. The other zetec version has a totally different pump that is push fit and an o ring so no issues with paper gaskets.
Also to make this engine even more special, the water pump, depending on aircon or not, runs in different direction which depends on the impellers. So you have to make sure you have the right direction pump. Ended up with a drivetec pump that was made for andrew page motor factors. Seem odd to buy a water pump made for a company that was merged with Eurocarparts (ECP) quite a few years ago. But then it was cheap at £9.50 from ECP.