REPAIR MAINTENANCE OPERATION OF MOTOR VEHICLES
Nissan Primera (from 1990 to 1992, the year of issue)

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Nissan
	Primera
		Introduction
		Routine maintenance and servicing
		Engine
		Cooling and heating
		The power supply system and exhaust
			The power supply system of carburettor engines
			The power supply system injection engines
			Exhaust
		Electrical system motor
		Manual transmission, differential and the main transfer
		Automatic Transmission
		Coupling and power shafts
		Brakes
		Suspension and steering
		Body
		Onboard electric
		Applications

The power supply system and exhaust

Specifications

Separate characteristics are resulted also in the text of the Head and in case of compulsion of their performance are highlighted in bold.

Injection engine

Engine SR20DE

Pressure regulator
The fuel pressure at idle speed:
vacuum hose connected	2.5 bar
vacuum hose off	3.0 bar
Idle (not adjustable)
air conditioning is turned off	850 ?� 50 rev / min
with the air conditioner	850 ?� 50 rev / min
Air flow meter
Electrical power	battery voltage, from 11 to 14
Coolant temperature:
at 20 ?� C	resistance of 2.1 - 2.9 kW
at 50 ?� C	Resistance 0.68 - 1.00 kW
at 80 ?� C	Resistance 0.30 - 0.33 kW
Various data
The resistance of the fuel pump	about 0.7 ohms
The resistance of the valve of additional air	about 10.0 ohms
The resistance of the injection valve	10-14 ohms
The resistance of the throttle position sensor:
the gas pedal is released	about 2 ohms
pedal partially released	from 2 to 11 kW
pedal depressed	about 11.0 ohms

Engine SR20Di

Pressure regulator
The fuel pressure at idle speed:
vacuum hose connected	2.5 bar
vacuum hose off	2.5 bar
Idle (not adjustable)
without air conditioning	850 ?� 50 rev / min
with the air conditioner	850 ?� 50 rev / min
Air flow meter
Electrical power	battery voltage, from 11 to 14
Output voltage	1.4-1.9 V, the engine is warm, idling
Coolant temperature	cm. The engine SR20DE
Various data
The resistance of the fuel pump	about 0.7 ohms
The resistance of the valve of additional air	about 10.0 ohms
The resistance of the injection valve	1-2 Ohms
The resistance of the throttle position sensor:
the gas pedal is released	about 1 ohm
pedal partially released	from 1 to 9 kW
pedal depressed	about 9.0 kW

Carbureted engines

Fuel pump:
Design	mechanical diaphragm pump
Feed pressure	0.21 - 0.35 bar
The number and design of the carburettor	1 two-chamber carburettor
These carburettor
Type of carburetor:
without catalyst	21L 304-05
catalyst	21L304-06

The diameter of the jets - without catalyst	1st Camera	2nd camera
carb hole	30.0 mm	34.0 mm
diameter air diffuser	22.0 mm	30.0 mm
main jet	Number 100	Number 135
air correction jet	Number 80	Number 60
jet of idling	Number 40	Number 80
air jet idling	80	80

high power jet	Number 55
level float	cm.
Adjustment of fast idling (starting valve clearance)	Mm 0.63 ?� 0.07
fast idling	2300 ?� 200 rev / min
idle speed	750 ?� 200 rev / min
CO	1.5% ?� 0.5%

These carburettor - engine with a catalyst	1st Camera	2nd camera
carb hole	see above	see above
diameter air diffuser	see above	see above
main jet	Number 92	Number 135
air correction jet	Number 70	Number 60
jet of idling	Number 50	Number 80
air jet idling	Number 80	Number 80
high power jet		-
level float		cm.
Adjustment of fast idling		as the absence of a catalyst
fast idling		as the absence of a catalyst
idle speed		as the absence of a catalyst
CO		1.0% ?� 0.5%

Fastener tightening torques are given in the text of the Head and on some graphics *.

* Highlighted text in bold torques are subject to exact observance; no bold efforts resulted only roughly.

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