Sunny 7 (1990-1998)

Technical data of the power supply system (Nissan Sunny B13)

Fuel pump type

Mechanical with camshaft drive

Carburetor (general information)

Type	Nikki 21L with automatic choke
Carburetor data for 1.4 and 1.6 L engines without catalytic converter (in brackets are data for 1.6 l engines, which differ from the same data for 1.4 l engines)
Idle speed	cm. subsection 2.1
Mixing chamber diameter	28 (30) mm
Large diffuser diameter	22 mm
Main jet	96 (100)
Main air jet	70 (80)
Idle fuel jet	40
Idle air jet	80
Accelerator pump nozzle	55
Adjustment data for the float:
The distance between the upper edge of the float and the plane of the carburetor (the carburetor is upside down)	10±0.5 mm
The distance between the lower edge of the float and the plane of the carburetor (carburetor in normal position)	43.5±0.5 mm
Throttle clearance at fast idle:
For cars with manual transmission	0.62±0.07 mm (0.59±0.07 mm)
For cars with automatic transmission	0.7±0.07 mm (0.75±0.07 mm)
Air damper clearances:
In 1st position	1.22±0.14 mm
In the 2nd position	2.15±0.32 mm
Carburetor data for 1.4 and 1.6 L engines with catalytic converter (in brackets are data for 1.6 l engines, which differ from the same data for 1.4 l engines)
Mixing chamber diameter	30 mm
Large diffuser diameter	22 mm
Main jet	88 (92)
Main air jet	70
Idle fuel jet	50
Idle air jet	80
Adjustment data for the float:
The distance between the upper edge of the float and the plane of the carburetor (the carburetor is upside down)	10±0.5 mm
The distance between the lower edge of the float and the plane of the carburetor (carburetor in normal position)	43.5±0.5 mm
Throttle clearance at fast idle (1.4L):
For cars with manual transmission	0.59±0.07 mm
For cars with automatic transmission	0.75±0.07 mm
For 1.6L engine	0.63(±0.07) mm
Air damper clearances:
In 1st position	1.44±0.14 mm
In the 2nd position	2.42±0.32 mm

Recommended gasoline (octane number by the research method)

Cars without catalytic converter
For 1.4L engine	with an octane rating of 95 unleaded or 91 leaded
For 1.6L engine	with an octane rating of 95 unleaded or 97 leaded
Cars with catalytic converter	with an octane rating of 95 unleaded, refueling with leaded gasoline is prohibited

Tightening torques (Nm)

Fuel pump bolts	19
Fuel tank bolts	34
Intake manifold bolts	19
Exhaust manifold bolts	19
Exhaust system mounting:
- intake pipe nut	31
- bolt of the inlet pipe	23
Nuts for connecting the intake pipe to the middle one (or with a neutralizer)	49
Articulation of the neutralizer with the end section	49
Joint of the middle pipe with the end section	49