Edelbrock Pro-Tuner, User Manual

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C21 FI6 Switched ground Injector 6
C22 AI5 Switched ground N/C
C23 FI5 Switched ground Injector 5
C24 DRVG C Power ground Power ground
7.2 Frequently Asked Questions (FAQs)
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Frequently Asked Questions (FAQ)
Engine won't start, what should I check?
• Check that the 2 & 3 pin ignition connectors are connected to the Distributor. The
injectors will not operate with out a Distributor Reference Pulse supplied by the
distributor. Insure you are showing RPM during cranking.
• Check the wire splices you installed as part of the conversion. Disconnect any one
of the eight injectors and check for +12V to ground on the terminal connected to
the pink wire, This is battery power. Use the Engine Simulator function to verify
the injectors are firing, ignition is supplying spark, and no serious faults exist.
How do I check the fuel pressure and what should the pressure be?
You should install a Schrader valve on the front of the passenger side fuel rail for testing
or install the optional fuel pressure sensor for the Pro-Tuner system.
To test for system leaks, (internal or external):
Connect a fuel pressure gauge to the Schrader valve.
Turn the ignition to run. (do not start).
The pump will run for a few seconds and quit.
Check the pressure, it should be 42 to 44 PSI, (
Depending on altitude and regulator
setup) .
Note & repair any leakage points.
Why is my fuel pressure too high?
• Check for a fouled fuel return line or stuck pressure regulator.
• Check the return fuel line for kinks or blockage.
What is the recommended spark plug for the Small Block Power package?
• The #6085 head needs a long reach gasket spark plug, we recommend the
Champion RC12YC.
• This is a 3/4" reach. Do not use stock GM plugs, they are designed for a tapered
seat.