Exhaust System BACKPRESSURE (Pressure Gauge)
Remove O2 sensor. Connect a pressure gauge and run engine at 2500 RPM. If pressure gauge exceeds 2.8 psi (.20 kg/cm2 ), exhaust system should be checked for restriction.
Remove O2 sensor. Connect a pressure gauge and run engine at 2500 RPM. If pressure gauge exceeds 2.8 psi (.20 kg/cm2 ), exhaust system should be checked for restriction.