LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mazda >> 1987 >> 626 Base >> Repair and Diagnosis >> Engine Performance >> System >> EGR System >> Description
April 5, 2026: LEMON Manuals is launched! Read the announcement.

EGR System: Description

The Exhaust Gas Recirculation (EGR) system allows measured amounts of exhaust gas into the intake manifold to reduce oxides of nitrogen (NOx).

The EGR system consists of EGR control valve, EGR modulator valve (non-turbo), 3-way solenoid valve (non-turbo), EGR position sensor (turbo), duty solenoid valve (turbo), vacuum check valve, and connecting hoses and pipes.