Form No. IS169 (Rev. H 11/15/2013)
ISSPRO, INC.
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2515 N.E. Riverside Way
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Post Office Box 11177
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Portland, Oregon 97211-1899
503-528-3400
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800-888-8065
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Fax: 503-528-3495
www.isspro.com © 2008 ISSPRO, Inc. All Rights Reserved.
FUEL PRESSURE GAUGE AND SENSOR
INSTALLATION INSTRUCTIONS
I C O N K E Y
CAUTION
Tools may be required
Shown in picture
Disconnect batteries. Do not reconnect battery power until
system is fully configured to avoid risk of shock or fire.
Find a location where fuel pressure can be measured such as a test port
on the fuel pressure regulator or aftermarket lift pump. This may require
adapter fittings to accommodate the ⅛” NPTF sensor threads. See
engine-specific notes below for details.
DO NOT attempt to install in a location exposed to fuel rail
pressure on common rail systems, as these systems typically operate at
over 20,000 PSI.
Install the new sensor. Pressure sensor threads are ⅛” NPTF.
Many Emission Control Devices are connected to OEM sensors or switches. Be careful not to
disable these when installing a sensor.
If leakage occurs at the sensor, tighten one-quarter turn at a time until leakage stops. If necessary,
thread sealant such as Teflon tape may be used.
When using a torque wrench, tighten approximately 20nm/15 lb-in. or slightly more, if leakage
occurs. Do not use the body of the sensor to tighten! Use only the hex and the correct wrench.
Do not over tighten!
Connect the pressure sensor to the pressure sensor harness by pressing the connector into
the slot.
Figure 1: Pressure sensor and harness.
Route the sensor harness to the intended gauge mounting location, using grommets as appropriate
when passing through the firewall.
Trim the sensor harness wires to length, leaving enough length to allow the gauge to be
pulled from the pod or mounting location without disconnecting the connector.
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