Simple Past
what is the different between (verb-to) and (most verb or Irregular Verbs) and how and when can I use it ?
Did you wash your car ?
was you wash your car ?

Question

Answer

"What is the difference between... and ...?" (Writing "different" is not correct.)

I actually don't understand your question. The only correct sentence is, "Did you wash your car?"

"Was you wash...?" has two major errors. We simply won't ever use this.