I just cleaned and stored my z and wanted to freshenup the motor anyway,

but in the past couple weeks i have been noticing a slight fog of white smoke comming from my exhuast as i take off from a stop, then it goes away. I also noticed when cruising at 75MPH on the freeway everything feels fine until i go to pass someone and the RPM's will bog down and then accelerate. The motor has given me no problems for 122,000 miles, but i know its due for a rebuild.

any thoughts? im guessing its antifreeze burning from a bad head gasket, but would that explain the bogging issues im getting at highspeeds?

thanks for any help in advance.

 

White smoke in these temperatures could just be condensation. Does the exhaust smell sweet? That would be more of an indicator of coolant burning.

 

If you just start the Z, and you see white smoke, it might just be vapor... But if your really worried about it, take it to a shop... The bogging from my experience usually happens under 3k rpm... Just shift to a lower gear!