Quote:
Originally Posted by T-Cut
The 1.8's are prone to coolant leaks from several common places. The water pump itself is one, and typically causes dripping from behind the crankshaft pulley. It drains from a hole at the bottom of the timing belt cover. This can get blown onto the sump case when driving. Your photos suggest quite a leak which could be from almost anywhere higher up. Maybe the most notorious spot on the turbo model is the plastic T-piece in the middle of the upper coolant hose. Check for signs on the downpipe that drops from the T-piece and bends off to the PRT. This is located just behind the radiator underneath. Another common place is the inlet manifold gasket/seal. This can leak externally or let coolant into No1 and/or No4 cylinder causing lumpy starting/tickover until fully warmed up. Of course, any circlip/Jubilee hose connection can leak so every hose connection has to be checked. The Turbo also has a tendency to leak from the push-on hose connector from the head. This has an O-ring/cone connection that's held together by a wire clip. Also look around the head gasket joint area. The original elastomer head gaskets can delaminate to let coolant out almost anywhere, even internally. This can cause excessive mayo-gloop under the oil filler cap and excessive steaming from the oil filler hole (hot engine). The sump joint doesn't involve coolant so don't worry about that one.
TC
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T Cut covered almost everything there , Will just add that MLS Gaskets have been known to leak between the layers . If draining the cooling system ,I would look at replacing the coolant
tee piece with outlet for turbo (if plastic) for an alloy one as the plastic is a known weak point for failure and can cost your engine.
https://www.dmgrs.co.uk/collections/...g-zt-pfk000040