skelly Posted December 7, 2004 Share Posted December 7, 2004 What are the early warning signs that indicate the head gasket should be replaced? Would like to perform preventative maintenance ... I have a 1997 Impreza wagon, 2.2 L engine - Is it true that I have an "interfearing" engine? It seems that 1996/1997 was when the switch occurred from non-interfearing to interfearing (? - this conclusion based on reading threds); so how do I verify that I truly have an "interfearing" engine? If the head gasket fails unexpectedly, is more ancillary damage done to an non-interfearing engine or an interfearing engine? Please also see my additional post today regarding timing belts. Link to comment Share on other sites More sharing options...
cookie Posted December 7, 2004 Share Posted December 7, 2004 interference. The timeing belt would be what you should worry about. You have an engine that is not rumored to have a head gasket problem so be thankful. Do make sure your belt is changed at the proper interval. Link to comment Share on other sites More sharing options...
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