Across
1. Tire casing
5. Dash gauge faces
8. Electronic fault-finding system, briefly (1,1,1,1,1)
9. Big-rig noisemaker (3,4)
10. Online automobilia-auctions site
11. Shop’s labor-charge system, perhaps (4,4)
13. Item left on pump, perhaps (3,3)
14. Parts supply-chain middleman
17. Diagnostic device for 8-Across system (4,4)
19. Removed air from brake system
22. Underhood power producers
23. Dieseling or auto-ignition (3,2)
24. Detailed design description, briefly
25. Essential body-shop tools

Down
1. Pre-EFI starting aid
2. Twist-off cooling-system parts (3,4)
3. Battery’s corrosive content
4. Unexpected engine stoppages
5. Length of time engine valve open
6. Word on Hawaii plates
7. Planetary gearset’s central element (3,4)
12. Fuel containers (3,5)
13. Seals between engine parts
15. Add weight to wheel
16. Uplifting service-bay equipment
18. Dwell ____, ignition-timing spec
20. Parking-lot souvenirs, sometimes
21. Engine-block material, often