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Wartsila’s User Group Forums 50 SG Engine Bubbling in Coolant Expansion Tank Reply To: Bubbling in Coolant Expansion Tank

#1982
cholm
Participant

We had a similar issue with on of our 18V50DF engines.  We tried hydro etc without luck.  We ended up pulling every head and eventually found the culprit – a leaking head gasket.  I’ve heard of no better method unfortunately and the Wartsila folks simply said to pull all the heads.