Test Description

2

Relieve fuel pressure by connecting Fuel Pressure Gauge (J34730-1) or equivalent to fuel pressure connection on fuel rail. Place fuel pressure gauge bleed hose in an approved gasoline container. With ignition off, open valve on fuel pressure gauge.

3

Record lowest voltage displayed by DVOM after first second of test. (During first second, voltage displayed by DVOM may be inaccurate due to initial current surge).

Voltage displayed by DVOM should be within specified range.
Voltage displayed by DVOM may increase throughout test as fuel injector windings warm and resistance of fuel injector windings changes.
An erratic voltage reading (large fluctuations in voltage that do not stabilize) indicates an intermittent connection within fuel injector.

FUEL INJECTOR SPECIFICATIONS

Resistance Ohms

Voltage Specification ⁽¹⁾

11.8-12.6

5.7-6.6

⁽¹⁾	Resistance should be taken with engine coolant between 50°F-95°F (10°C-35°C).

5

Injector Specifications:

FUEL INJECTOR SPECIFICATIONS

Highest Acceptable Voltage Reading Above/Below 95/50°F (35/10°C)	Acceptable Subtracted Value
9.5 Volts	0.6 Volts