MoTeC M8 - Manual (Page 39)

MoTeC Initial Starting Procedure 37
the errors need to be cleared by pressing the Enter key while viewing the
E.M.P. Diagnostics Errors screen, so that constant cranking may be
checked for errors. Diagnostic errors may occur as cranking winds down, this
is also OK.
Cranking Ignition Timing
Check that the Ignition Timing is correct during constant cranking.
Dial back timing lights such as the Snap-On® brand may not work
correctly at cranking - use a traditional timing light.
For some trigger modes (one tooth per firing) the Ignition Timing is set by
the sensor position only. In this case the ECU only controls the timing
above 500 RPM.
If the spark is going to the wrong cylinder on a Direct Fire Ignition then the
ignition may be wired incorrectly or the criP (Crank Index Position) setup
parameter may be out by a multiple of the angle between cylinders.
Starting
Fuel System
Power up the fuel pumps and check the fuel system for leaks before
attempting to start the engine.
Fuel Overall Trim
Use the FUEL - Overall Trim to vary the mixture when trying to start the
engine to see if the engine needs more or less fuel, this ensures that the
mixture is varied equally for all RPM and Load points.
Establish how much trim the engine needs on average then trim this out by
adjusting the setup parameter IJPU (Injector Pulse Width Scaling), or by
using the Overall Trim Table item in the Function Menu.
If the Engine won’t start
Check for correct fuel pressure.
Check for fouled plugs.
Re-check for diagnostics errors.
Re-check the Ignition Timing with a Timing Light.
Check the setup parameters against the drawings.