Engine Technical Data: Notes

PART SPECIFICATION

Item	Specification
Idle speed (MTX: Neutral position, ATX: P, N position)	600-700 RPM
Ignition timing	Approx. BTDC 12°
CO concentration	Within the regulation
HC concentration	Within the regulation
Idle-up speed (MTX: Neutral position, ATX: P, N position)	A/C on: 600-800 RPM Electrical loads on: 650-770 RPM (MTX), 600-770 RPM (ATX)
Valve clearance for inspection [Engine cold]	IN: 0.22-0.30 mm {0.009-0.011 in} EX: 0.27-0.37 mm {0.011-0.014 in}
Valve clearance for adjustment [Engine cold]	IN: 0.22-0.28 mm {0.009-0.011 in} EX: 0.27-0.33 mm {0.011-0.012 in}
OCV coil resistance	6.9-7.9 ohms [20°C {68°F}]
Cylinder Head Bolt Length L	145.2-145.8 mm {5.717-5.740 in}
Cylinder Head Bolt Maximum	146.5 mm {5.767 in}
Engine oil capacity (approx. quantity)	Oil replacement: 4.6 L {4.9 US qt, 4.0 Imp qt} Oil and oil filter replacement: 5.0 L {5.3 US qt, 4.4 Imp qt} Total (dry engine): 5.5 L {5.8 US qt, 4.8 Imp qt}
Oil pressure (reference value) [oil temperature: 100°C {212°F}]	395-649 kPa {4.03-6.61 kgf/cm² , 57.3-94.1 psi} [3, 000 RPM]
Engine coolant capacity [U. S. A. and CANADA] (approx. quantity)	MTX: 6.7 L {7.1 US qt, 5.9 Imp qt} ATX: 6.6 L {7.0 US qt, 5.8 Imp qt}
Engine coolant capacity [Except U. S. A. and CANADA] (approx. quantity)	6.8 L {7.2 US qt, 6.0 Imp qt}
Cooling system cap valve opening pressure	93.2-122.6 kPa {0.951-1.250 kgf/cm² , 13.6-17.7 psi}
Thermostat initial-opening temperature	80-84°C {176-183°F}
Thermostat full-open temperature	97°C {207°F}
Thermostat full-open lift	More than 8.0 mm {0.31 in}
Cooling fan motor No. 1, No. 2 standard current	No. 1: 4.7-8.7 A [12 V] No. 2: 7.4-11.4 A [12 V]
Fuel pressure	375-450 kPa {3.83-4.58 kgf/cm² , 54.4-65.2 psi}
Fuel hold pressure	200 kPa {2.04 kgf/cm² , 29.0 psi} or more
Fuel injector resistance	11.4-12.6 ohms [20°C {68°F}]
Battery electrolyte specific gravity [20°C {68°F}]	1.22-1.29
Battery load test current	55D23L (48): 180 A 75D23L (52): 195 A
Battery parasitic draw (When the ignition is off (key is removed), all doors and the hood are closed.)	40-65 mA
Battery slow charge current	55D23L (48): 4.5-5.5 A 75D23L (52): 5.0-6.0 A
Battery quick charge current [30 min]	55D23L (48): 30 A 75D23L (52): 35 A
Generator standard voltage [IG-ON]	Terminal B: B+ Terminal P: Approx. 1 V or less Terminal D: Approx. 0 V
Generator standard voltage [Idle, 20°C {68°F}]	Terminal B: 13-15 V Terminal P: Approx. 3-8 V Terminal D: Turn the electrical loads (headlights, blower motor, rear window defroster, brake lights, etc.) on and verify that the voltage reading increases.
Generator generated current minimum value	70% of the nominal output current (nominal output current: 110 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}]	1.8-2.2 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	L3Y2 18110, LFJD 18110
Spark plug gap (L3Y2 18110)	Standard: 1.25-1.45 mm {0.049-0.057 in} New spark plug (reference): 1.25-1.35 mm {0.049-0.053 in}
Spark plug gap (LFJD 18110)	Standard: 1.25-1.35 mm {0.049-0.053 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	90 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: 15.1-20.4 N {1.54-2.08 kgf, 3.40-4.58 lbf} Minimum: 2.75 N {0.280 kgf, 0.618 lbf}