Mazda MX-5 1990 Workshop Manual page 792

TO
TECHNICAL DATA
Item
Engine
86 DOHC
Coolant protection
Volume percentage %
Specific gravity at
Water Coolant
20°C (68°F)
Antifreeze solution
Above -16°C (3°F)
65
35 1.054
Above -26°C (-15°F) 55 45 1.066
Above -40°C (-40°F)
45
55
1.078
F. FUEL AND EMISSION CONTROL SYSTEMS
Item Specification
Idle speed
rpm 850 ± 50
*
Ignition timing
BTDC 10°
±
1 °
*
Throttle body
Type
Horizontal draft
Throat diameter
mm (in)
55 (2.2)
Dashpot
Adjustment speed
rpm
2,500 ± 150
Airflow meter
E2
<--+
Vs
Fully closed 200-600
Fully open
20-1,000
E2
<--+
Vc
200-400
Resistance
Q
E2
<--+
THAA
-200C (-4°F)
13,600-18,400
(Intake air
20°C (68°F) 2,210-26,90
thermosensor)
60°C (140°F) 493-667
E1
<--+
Fc
Fully closed
00
Fully open
0
Fuel pump
Type
Impeller (in-tank)
Output pressure
kPa (kg/cm
2
,
psi)
441-589 (4.5-6.0, 64-85)
Fuel filter
Type
Low-pressure side
Nylon element
High-pressure side Paper element
Pressure regulator
Type
Diaphragm
Regulating pressure
kPa (kg/cm
2
,
psi)
265-314 (2.7-3.2, 38-46)
Injector
Type
High-ohmic
Type of drive Voltage
Resistance
Q 12-16 (at 20°C, 68°F)
ISC valve (Solenoid valve [Idle speed control])
Solenoid resistance
Q 11-13 (at 20°C, 68°F)
Circuit opening relay
STA -
El
21-43
Resistance 0 8 - Fc 109-226
B - Fp
00
Solenoid valve (Purge control)
Solenoid resistance
Q 23-27 (at 20°C, 68°F)
Crank angle sensor
Type
Optical pickup
Water thermosensor
-20°C (-4°F) 14.6-17.8
Resistance
kO
20°C (68°F) 2.2-2.7
80°C (176°F) 0.29-0.35
Air valve
Opening temperature
0C
(OF)
Below 40 (104)
Fuel tank
Capacity
liters (US gal, Imp gal) 45 (11.9, 9.9)
* ....
with system selector (49 8019 9AO) test switch at SELF TEST
TD-6