Hey guys I want to share with you my current project and ask a few questions.
I have a 1990 Toyota Camry DX with 83K on it

Perfect interrior, but the exterrior is filthy from sitting under a tree in a yard for over a year. It was my first car, I intend to bring it back to life and use it once again as a project car.
So far i have given it an oil change. But i have a few questions:
- There is white/gray colored smoke coming from the exhaust what could be causing that? (Maybe condisation?)
- The engine is making a knocking sound/ticking sound it never made before, sounds like its coming from one of the cylinders, someone said a stuck hydralic something? what do you think?
- The transmission sorta kicks into second gear, something it never has done before, should i be worried?
- I want to wash the car, if its below 45* F is it to cold or does it matter at all?
- What other tips can u suggest to help restore this ol' cam to its origional glory?
Other Plans:- Id like do some performace, where should i start?
- Do they make Air intakes for 90 Cam's? If so who?
- Is there any known Turbo for 90 Cam's? Or does it require heavy modification like all other cam's?
Thanks for any help and to anyone who takes the time to read this and try to answer my questions.