Coolant loss mystery solved

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Stuart W
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Coolant loss mystery solved

Post by Stuart W »

My C4 Grand Picasso continues to keep me busy with yet another problem.
For several months the coolant has been disappearing without trace.All the usual checks revealed nothing.I even resorted to removing the heater matrix as a possible hidden away leak, but that was ok too.
Today I found the culprit
The small black pipe which acts as a
return from the rad to the reservoir bottle.This had been rubbing on the aluminium aircon pipe near the front headlamp, drivers side.This produced a pinhole on the blind side which only leaked when the rad pressure was up.Previous cold pressure testing had not shown it up.
Last edited by myglaren on 14 May 2024, 18:15, edited 1 time in total.
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Re: Coolant loss mystery solved

Post by CitroJim »

Gosh! Well found :D

Runner, cyclist, time triallist, duathlete, Citroen AX fan and the CCC Citroenian 'From A to Z' Columnist...