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Catalog #70403
Brochure No. 63-0147
©2003 Edelbrock Corporation
Rev. 1/03
5.0 Troubleshooting and Routine Maintenance
How to use our Troubleshooting Flowchart:
The troubleshooting of a nitrous system is basic and straightforward. The symptom chart is divided by symptom,
cause and action required. Determine your problem (symptom), identify the potential problem (cause) and correct
the problem (action required).
Symptom #1… Change in engine speed when nitrous bottle valve is opened.
1. Malfunctioning nitrous solenoid.
a. Refer to “Solenoid Inspection and Maintenance” section.
b. Repair/replace solenoid.
2. Contamination in nitrous solenoid.
a. Refer to “Solenoid Inspection and Maintenance” section.
b. Clean/replace solenoid.
Symptom #2… Engine runs excessively rich when system is activated.
1. Nitrous bottle valve not fully opened.
a. Check bottle valve.
b. Open valve fully.
2. Nitrous bottle mounted improperly.
a. Mount bottle properly. Refer to “Nitrous Bottle Mounting” section.
3. Plugged nitrous filter.
a. Clean and/or replace nitrous filter.
b. See nitrous solenoid symptom #1.
4. Low bottle pressure.
a. Weigh bottle.
1. Bottle should be 10 lbs. above empty, bottle weight listed on bottle label.
b. Check bottle temperature.
1. Maintain 80 to 85 degrees of bottle surface temperature.
Symptom #3… No change in performance when system is activated.
1. System wired incorrectly.
a. Compare wiring to schematic. Refer to “Nitrous Electrical System Installation Procedures” section.
b. Wire per instructions.
2. Loose ground wires.
a. Connect test light to battery "+" (positive) terminal. Check for continuity at grounds.
b. Tighten/repair loose grounds.
3. No power to arming switch.
a. With ignition "on", connect test light to battery "-" (negative) terminal. Check for power at pole
#1 on arming switch.
b. Repair wiring as necessary.