The California smog equipment required to get your 5.7 liter engine equipped Chevy Blazer California smog legal are:
PCV (Positive Crank Ventilation), ACL (Pre-Heat Tube - This component is required on most vehicles with carbureted engines. The pre heat tube is usual a flexible metal duct attached to the engine's air filter housing on one end and an exhaust manifold cover on the other), AIS (also known as the Smog Pump), EGR (exhaust gas recirculation valve), EVAP system, and CAT (catalytic convertor).
Depending on whether your Blazer is an automatic or stick, ignition timing is different. AUTO: 6 BTDC at 600 rpm. STANDARD: 8 BTDC at 800 rpm. Timing should be inspected at the number 1 cylinder with the distributor vacuum advance hose disconnected and plugged.
Our recommendation is to make an appointment with the state smog check referee's office before starting any work.
posted by SmogTips Support
