How to Replace a '99 Miata EGR Valve?

Answer The exhaust gas recirculation (EGR) valve in your 1999 Mazda Miata is an exhaust intake regulator that's mounted to the intake manifold of the engine block. The EGR is designed to regulate the mixt... Read More »

Top Q&A For: How to Replace a '99 Miata EGR Valve

How to Clean an EGR Valve on a Miata?

The EGR valve in your Mazda Miata reduces the nitrogen oxide emissions produced by your engine. It significantly diminishes harmful emissions by recirculating a fraction of the exhaust back to the ... Read More »

Where Is the EGR Valve Located on a 99 Miata?

The 1999 Mazda Miata was involved in a factory recall directly involving the Exhaust Gas Recirculation (EGR) valve. The oversize, sharp, metal gasket used to mount the valve cut into the wiring har... Read More »

How to Install a PCV Valve on a 1999 Miata?

All automotive engines produced in the last 20 years use some sort of positive crankcase ventilation (PCV) system. This system consists of a hose that connects an engine vacuum source (the intake m... Read More »

1997 Miata EGR Valve Installation?

The exhaust gas recirculation valve connects to the intake manifold on the 1997 Mazda Miata and reuses partially burned exhaust gasses in engine combustion cycles. This improves vehicle emission ra... Read More »