ASE A8 Engine Performance Workbook — Emissions Control | 48 Questions, Quiz with Key | Free Course on YouTube

Watch the full course free: https://www.youtube.com/playlist?list=PLDamVepm6x4A

Emissions Control Systems is 16% of the ASE A8 Engine Performance exam — and the section this workbook drills the way the test asks it: PCV in both failure directions, EGR flow proof, secondary air, converter discipline, and EVAP leak hunting, page by page alongside the free ASE Prep Lab Module 4 course on YouTube.

Print a page, watch the lesson, and write as you go: the PCV circuit, the EGR flow path, the AIR system layout, converter monitor logic, and the EVAP system map — then prove it with the check questions built into every lesson page.

WHAT'S INSIDE (20 pages, US Letter PDF)
• 6 follow-along lesson pages (M4-1 to M4-6) matched to the free video lessons
• 48 original ASE-style practice questions (30 lesson checks + 18-question module quiz), Technician A/B formats included
• The module's course diagrams printed on the lesson pages — cover the labels and name each part before you check
• Score-by-topic sheet that shows exactly which lesson to restudy
• Complete answer key for every question

Built entirely from ASE's published A8 task list — every lesson names the tasks it covers. Print-ready in black and white; also works on a tablet with a stylus.

PLEASE NOTE: This is a study aid, not an ASE product. Built from ASE's published A8 task list. Not affiliated with or endorsed by ASE. The video course is free on YouTube (@ASEPrepLab); this workbook is its printable companion. Found an error? Message us — corrections post to the course errata and updated PDFs follow.

THE COMPLETE ASE A8 ENGINE PERFORMANCE LIBRARY (ASE Prep Lab)
• Module 1 Workbook — General Diagnosis: https://www.etsy.com/listing/4604182126/ase-a8-study-workbook-module-1-general
• Module 2 Workbook — Ignition Systems: https://www.etsy.com/listing/4604198509/ase-a8-study-workbook-module-2-ignition
• Module 3 Workbook — Fuel, Air Induction and Exhaust: https://www.etsy.com/listing/4604215493/ase-a8-study-workbook-module-3-fuel-air
• Module 5 Workbook — Computerized Engine Controls: https://www.etsy.com/listing/4604295483/ase-a8-study-workbook-module-5
• Timed Mock Exams — three full 60-question simulations: https://www.etsy.com/listing/4604323592/ase-a8-mock-exams-3-timed-practice-tests
• Complete Course Bundle — all five workbooks + the mock exams in one download: https://www.etsy.com/listing/4604306183/ase-a8-engine-performance-complete
• A8 Practice Questions — the full 300-question packet on its own: https://www.etsy.com/listing/4603001138/ase-a8-practice-test-300-questions-o