Hi I,m John Im will help youwith the dirty motor .
Did you take the dryer apart to look at the motor ?
Yes and it was super dirty. He rinsed it out with a jet of water and said it was ok to do that
My question is just if that's possible
You dont use water to clean the motor , you can use vacuum cleaner and a brush .
Water and electricity dont like each other it can blow the motor .
What you should do now is dry out the motor with a hair blower before you turn it on .