1993 Mazda MX3 Repair Question
Topics covered: Fuel pressure, Fuel pump.
Mileage: 220,000 miles.
Mileage: 220,000 miles.
Asked on December 25, 2012
Mazda MX3 Fuel pressure Problem
On a 1993 mx3 1.6L when you turn key on there is no fuel pressure reading on on the test guage.also when it starts it reads 18lbs.I have tried 2 different pumps they both read the same.
I have 12.6 volts all the way to the pump
I have 12.6 volts all the way to the pump
Asked by gatertamerAnswer
Replied on December 25, 2012
FUEL PUMP PRESSURE (UNREGULATED) 64 - 85 psi (441 - 589 kPa)
FUEL SYSTEM PRESSURE (REGULATED)
W/18" - 21" Hg Vacuum To Pressure Regulator 30 - 38 psi (206 - 265 kPa)
W/No Vacuum To Pressure Regulator 37 - 46 psi (255 - 314 kPa)
FUEL SYSTEM RESIDUAL PRESSURE 21 psi (147 kPa) min.
AIR VALVE
Air Valve Operating Range Closed Above 140°F (60°C)
