Front disc, rear drum.
The valves can bend. You would then be repairing or replacing the engine.
Yes
2
No.No.
It comes on when a malfunction has been detected by the engine computer. You need to have the codes read to know possible causes.
100,000 miles.
If it has a manual trans, then yes.
In order to change the timing belt in your PT Cruiser you will need the new tensioner and timing belt covers. Your dealership should have the parts you need
Every 60,000-100,000 miles.
You probably need your front end aligned.
5w30
Only if pressure is not firming up.