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Old 5th April 2021, 13:51   #7
T-Cut
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Rover75 and Mreg Corsa.

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Quote:
Originally Posted by chrismyerz View Post
Any more ideas, I don't think it's coming from the water pump area (pic 2) what about the sump gasket?
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

Last edited by T-Cut; 5th April 2021 at 13:57..
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