My 97 neon runs great...until it get up to opperating tempature then it begins to smoke and sputter. It smokes white but never loses antifreeze. No water in oil so i doubt it is head gasket any suggestions.As always thanks for the help guys i really appricate it.

 

Bad coolant temp sensor, pcv, or intake manifold gaskket are my guess's.

 

It never overheats. And i think i am going to change my pcv tomorrow and will update if that takes care of it.

 

changed pcv. And seems to be working fine. Thanks