Automotive Emissions Control Techbook Through 1996 Haynes Improve your performance and fuel economy with these easy-to-use instructions for domestic and imported models. One of the least understood and most temperamental systems, emmissions are also one of the easiest to repair. Let Haynes show you how! Covers systems and components, smog test prep, vacuumdiagnosis, maintenance, troubleshooting and repair. Sftbd., 8 1/4x 1 1/2, 192 pgs., 255 b&w ill.