Wren Turbines Ltd. MW54 Mk2 & Mk3 Turbo-Jet, kit assembly instructions, Jun 2004
Page 29
ECU problem.
Fuel pump not running.
Pump battery not charged (recharge).
Pump or battery not connected (connect).
ECU display not showing “Ready” – see “Starting the engine”
Pump jammed with foreign object - connect briefly direct to battery to check operation.
“Kill Switch” is in “OFF” position – switch to “On”.
ECU problem.
Pump runs but no fuel delivered.
Fuel not reaching tank pick-up – blocked clunk, clunk jammed against roof of tank, feed pipe folded, air in
fuel line, low fuel level.
Fuel tap in “shut” position – “open”,
Pump fault (return to dealer).
No or little rpm increase as fuel
Insufficient revs on starter motor
Ignites.
Starter battery low – recharge.
Fuel tap only partially open – open fully.
Pump battery low – recharge.
Air in fuel line – air will disappear after several seconds.
Tank feed problem – see above.
Excessive flaming.
Trim down/shut off fuel & gas immediately.
Residual fuel in engine – spin engine “dry” for 10 seconds to clear.
There was air in fuel system – restart.
Insufficient revs on starter – recharge starter battery.
Starter removed too soon – hold on until 32,000rpm minimum.
Starter motor burnt out/inoperative – replace.
ECU settings changed from defaults – return to defaults.
Engine malfunction – investigate and repair – likely fuel ring problem.
Engine overshoots at idle.
Normal problem until ECU settles down.
Starting technique too slow – practice.
Air in fuel line causes late but rapid startup - ECU will correct itself and settle down.
Engine slows or is stopped during
“Overtemp’” is detected by ECU and shutdown.
start.
Temp’ has run over 800’C due to long hot start, low start battery, air in fuel line. Cool off and restart.
Summary of Contents for MW54 Mk2
Page 1: ......
