Fuel system

Make

Fiat

Model

Punto (176) Factory Service Manual

Year

1993–1999

Section

Engine ('97 range) › Fuel system

00 Introduction and technical dataFuel system · page 1 of 3

Cooling circuit	coolant circulation via centrifugal pump, radiator and two speed electrical fan operated by thermostatic switch
Water pump operation	through belt
Thermal switch to engage fan	1st stage	90° ÷ 94°C
	2nd stage	95° ÷ 99°C (■)
	1st stage	85° ÷ 89°C
	2nd stage	90° ÷ 94°C (■)
Engine coolant thermostat	opening	81° ÷ 85°C
	max opening	103°C
	valve travel	9,5 mm
Clearance between impeller vanes and pump casing	-
Pressure for checking syst. water tightness	0,98 bar
Pressure for checking exhaust valve on expansion tank cap	0,98 bar

(■) Versions with climate control

FUEL SYSTEM

Type	Weber-Marelli I.A.W. M.P.I. integrated electronic injection/ignition
Pump	electrical, immersed in tank
Capacity	≥ 110 l/h
Fuel pressure regulator setting	3 bar
Checking idle concentration of pollutant emissions	CO (%)	HC (p.p.m.)	CO₂ (%)
Upstream of the catalytic converter	0,4 ÷ 1	≤600	≥ 12
Downstream of the catalytic converter	≤0,35	≤90	≥ 13

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01 General