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©2007 Edelbrock Corporation
Brochure #63-70216
Page 15 of 16
Catalog #70216
Rev. 5/07 - DC/mc
Symptom #5 -- Engine detonates heavily when system is activated.
Inadequate fuel delivery due to:
1.
Plugged fuel filter.
a.
Inspect fuel filter.
i.
Clean or replace filter.
2.
Crimped fuel line.
a.
Inspect fuel line.
i.
Replace crimped line.
3.
Weak or inadequate fuel pump.
a.
Install fuel pressure gauge. Run engine under load at wide open throttle, with system activated and monitor the fuel
pressure. If the fuel pressure drops significantly the stock pump may be worn or inadequate.
i.
Repair or replace fuel pump.
ii.
Install nitrous dedicated fuel supply.
4. MAKE SURE THERE IS NOT A NON-NITROUS COMPATIBLE AFTERMARKET CHIP OR PROGRAMMING IN THE ECM!
Symptom #6 -- No change in performance when system is activated.
1.
System wired incorrectly.
a.
Compare wiring to schematic.
i.
Wire per instructions.
2.
Loose ground wires.
a.
Connect test light to battery “+” (positive) terminal. Check for continuity at grounds.
i.
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.
i. Repair wiring.
4.
Malfunctioning arming switch.
a.
With ignition on, turn arming switch on. Connect test light to battery “-” (negative) terminal. Check for power at red
wire on arming switch.
i.
Replace arming switch.
5.
WOT switch may not be set to proper voltage.
a.
Attach a test light to the power output (Yellow wire) of the WOT switch and check
for power at wide open throttle.
i.
Adjust the pot voltage setting to correct voltage. The adjustable pot screw
relocated inside the WOT switch as pictured to the right.
6.
Inadequate nitrous supply.
a.
Weigh bottle.
i.
Bottle should be 10 lbs. above empty bottle weight listed on bottle label
when full.
b.
Check bottle temperature.
i.
Maintain 80°-85°F of bottle surface temperature.
c.
Check bottle valve.
i.
Open valve fully.
d.
Check bottle orientation.
i.
Mount bottle properly.
7.
Mismatch nitrous/fuel jetting.
a.
Compare jetting to recommended values.
i.
Install correct jets.
b.
Verify the number stamped in the jet match the desired power level.
i.
Acquire the right size jets and install the correct jets.
Adjustment screw for the WOT
voltage setting.
