Haltech F9A - Manual (Page 45)

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Chapter 5
Starting the Engine
There are a few things that need to be done before the engine should be started. Make sure
that the ECU is powered (ignition on) and the Haltech Software is Online. Go to the Engine
Data Page to check that the ECU is communicating properly, and that the sensors are reading
correctly. Check again that the Main Setup, and Fuel Setup are all set correctly. In particular,
check the No. Cylinders, Ign Div/By, Load Sensor and Injection Mode parameters. If any of
these are incorrect, the engine may run, but proper tuning will be impossible.
5.1 Calibrating the Throttle Position Sensor
The throttle sensor must be calibrated so that the ECU knows the start and stop positions of
the sensor. Set the idle throttle opening using the idle adjust screw. If the required opening for
idle is not known, make an estimate but keep in mind that this may be the reason for poor idle
later on, and further adjustment may be needed. Choose the "calibrate throttle" option from
the options menu and follow the instructions on the screen.
5.2 Checking the trigger
It is a good idea to check that the F9 is receiving a reliable trigger signal. Remove the 20A
fuse from the fuse block. This will prevent the fuel pump from running and the engine from
starting. The engine should then be cranked over on the starter and the rpm displayed on the
engine data page should read about 100 to 300 rpm. If the engine speed is zero or is erratic
then refer to the section in Chapter 1 [1.3.14] regarding trigger setup. If the trigger is
operating correctly then replace the 20A fuel pump fuse.
5.3 Determining Engine Fuel Needs
You should now be ready to start the engine. At this stage, you should not be using the Zero
Throttle Map. Check that it is disabled in the Fuel Setup. Go to the Fuel maps and display the
0 rpm range. During cranking, the pointer will appear across this page, until the engine speed
picks up and lifts into the 500 and 1000 rpm ranges. Press the

key to jump to the current
load point immediately.
If you are using manifold pressure as the load sensor, the engine will be close to atmospheric
pressure during cranking. If you are using throttle position, then the F9 will be using bar 1
while cranking and idling. Once the engine is tuned, you should not need to apply any throttle
to get the engine to fire. When cranking the engine watch for the indicator arrow over the
bars. This will tell you what bar the F9 is using to calculate the fuel. The bars that the arrow
indicates are the Bars that will need to be adjusted to get the engine to run.
If the engine is not firing at all, check that spark is available. Also check that the spark plugs
are clean and are not wet. It is unwise to crank on the starter motor for extended periods. The
engine should fire and run within the first few seconds of cranking.