Engine Technical Data: Notes

Item	Specification
Idle speed (MTX: Neutral position, ATX: P position or N position)	MTX: 500-600 RPM ATX: 700-800 RPM
Ignition timing	MTX: Approx. BTDC 14° ATX: Approx. BTDC 12°
CO concentration	Within the regulation
HC concentration	Within the regulation
Idle speed (MTX: Neutral position, ATX: P position or N position)	A/C on: 700-800 RPM Electrical loads on (MTX): 600-750 RPM Electrical loads on (ATX): 700-800 RPM
OCV coil resistance	6.9-7.5 ohms [20°C {68°F}]
Standard cylinder head bolt length	145.2-145.8 mm {5.717-5.740 in}
Maximum cylinder head bolt length	146.5 mm {5.767 in}
Front oil seal press on amount	0-1.0 mm {0-0.039 in} from edge surface of engine front cover
Rear oil seal press on amount	0-0.5 mm {0-0.019 in} from edge surface of cylinder block
Engine oil capacity (approx. quantity)	Oil replacement: 4.0 L {4.2 US qt, 3.5 Imp qt} Oil and oil filter replacement: 4.2 L {4.4 US qt, 3.7 Imp qt} Total (dry engine, without oil cooler): 4.9 L {5.2 US qt, 4.3 Imp qt} Total (dry engine, with oil cooler): 5.0 L {5.3 US qt, 4.4 Imp qt}
Oil pressure (reference value) [coolant temperature: 80-90°C {176-194°F}] [Without coolant control valve]	Lo: 110-175 kPa {1.13-1.78 kgf/cm ² , 16.0-25.3 psi} [1, 500 RPM] Hi: 300-430 kPa {3.06-4.38 kgf/cm ² , 43.6-62.3 psi} [4, 500 RPM]
Oil pressure (reference value) [oil temperature: 80-90°C {176-194°F}, coolant temperature: 80-90°C {176- 194°F}] [With coolant control valve]	Lo: 135-165 kPa {1.38-1.68 kgf/cm ² , 19.6-23.9 psi} [1, 500 RPM] Hi: 225-275 kPa {2.30-2.80 kgf/cm ² , 32.7-39.8 psi} [4, 500 RPM]
Cooling system cap valve opening pressure	93.2-122.6 kPa {0.951-1.250 kgf/cm ² , 13.6- 17.7 psi}
Engine coolant capacity (approx. quantity) [Without coolant control valve]	MTX: 5.6 L {5.9 US qt, 4.9 Imp qt} ATX (U.S.A. and Canada): 5.8 L {6.1 US qt, 5.1 Imp qt} ATX (Except U.S.A. and Canada): 6.1 L {6.4 US qt, 5.4 Imp qt}
Engine coolant capacity (approx. quantity) [With coolant control valve]	MTX: 5.6 L {5.9 US qt, 4.9 Imp qt} ATX (U.S.A. and Canada): 5.9 L {6.2 US qt, 5.2 Imp qt} ATX (Except U.S.A. and Canada): 6.1 L {6.4 US qt, 5.4 Imp qt}
Thermostat initial-opening temperature [Without coolant control valve]	86.5-89.5°C {188-193°F}
Thermostat full-open temperature [Without coolant control valve]	100°C {212°F}
Thermostat full-open lift [Without coolant control valve]	More than 8.5 mm {0.33 in}
Cooling fan motor standard current	15.0-21.0 A [12 V]
Throttle body resistance	0.3-100 ohms [20°C {68°F}]
Fuel pressure	425-505 kPa {4.34-5.14 kgf/cm ² , 61.7-73.2 psi}
Fuel hold pressure	250 kPa {2.55 kgf/cm ² , 36.3 psi} or more
Fuel injector resistance [Surrounding temperature: 0-80°C {32-176°F}]	Without coolant control valve: 1.6-2.52 ohms With coolant control valve: 1.23-2.03 ohms
Battery electrolyte specific gravity	1.22-1.29 [20°C {68°F}]
Battery load test current	55D23L (60 A.h/20HR): 180 A 75D23L (65 A.h/20HR): 195 A
Battery parasitic draw (When the ignition is off, all doors and the bonnet are closed.)	40-65 mA
Generator standard voltage [IG-ON]	Terminal 1A: B+ Terminal 2A: Approx. 1 V or less Terminal 2B: Approx. 0 V
Generator standard voltage [Idle, 20°C {68°F}]	Terminal 1A: 13-15 V Terminal 2A: Approx. 3-8 V Terminal 2B: Turn the electrical loads (such as headlights, blower motor, rear window defogger, brake lights) on and verify that the voltage reading increases.
Generator generated current minimum value	70% of the nominal output current (nominal output current: 100 A) [Ambient temp. 20°C {68°F}, voltage 13.0-15.0 V, both engine and generator are hot]
Generator rotor resistance (between slip rings) [20°C {68°F}]	1.9-2.2 ohms
Generator brush length	Standard: 22.5 mm {0.886 in} Minimum: 5.0 mm {0.20 in}
Generator brush spring force	Standard: 4.1-5.3 N {0.42-0.54 kgf, 1.0-1.1 lbf} Minimum: 1.7 N {0.17 kgf, 0.38 lbf}
Firing order	1-3-4-2 (all cylinders independent firing)
Firing order	Courtesy of MAZDA MOTORS CORP.
Spark plug type	PE5R-18-110, PE5S-18-110
Spark plug gap	Standard: 1.05-1.40 mm {0.0414-0.0551 in} New spark plug (reference): 1.05-1.15 mm {0.0414-0.0452 in}
Spark plug resistance [25°C {77°F}]	3.0-7.5 kilohms
Starter no-load test voltage	11 V
Starter no-load test current	95 A or less
Starter pinion gap	0.5-2.0 mm {0.02-0.07 in}
Starter armature runout	0.1 mm {0.004 in} max.
Starter commutator diameter	Standard: 29.4 mm {1.16 in} Minimum: 28.8 mm {1.13 in}
Segment groove depth of starter commutator	Standard: 0.5 mm {0.02 in} Minimum: 0.2 mm {0.008 in}
Starter brush length	Standard: 12.3 mm {0.484 in} Minimum: 5.5 mm {0.22 in}
Starter brush spring force	Standard: 15.0-20.4 N {1.53-2.08 kgf, 3.38-4.58 lbf} Minimum: 2.75 N {0.280 kgf, 0.618 lbf}