Monster S4 916 fires once but will not start

skidlids · 27-Mar-2014, 18:53

The usual reason for blowing the Coil driver inside the ECU is a fault on its output, usually a dodgy coil. Have the coils been checked or changed

dunlop0_1 · 27-Mar-2014, 20:13

Sounds similar to the fault I had at Anglesey. Eventually backfired and set fire to the air filters

. Turned out to be the air pressure sensor, the one on the header tank.

However you mention an immobilizer? does it have an alarm because that would be my first suspect.

skidlids · 27-Mar-2014, 21:37

Quote:

Originally Posted by dunlop0_1

Sounds similar to the fault I had at Anglesey. Eventually backfired and set fire to the air filters

. Turned out to be the air pressure sensor, the one on the header tank.

However you mention an immobilizer? does it have an alarm because that would be my first suspect.

Neil it uses a 59M ECU with a separate OEM immobiliser. All very similar to a Class A DD bike

carsbikesboatsplanes · 27-Mar-2014, 23:05

Air press sensor on 2001 has no electric connection. Tried stick coils. All points to CPS timing sensor but tried that too. All sensors, wiring checked. Phonic wheel checked. Re;lays checked. New flashed ecu and racing ecu tried. Good battery tried. All switches checked including sidestand etc, When cranking, fires once and if held may fire again after about 19 seconds, Tried turning back wheel in gear with plugs out also gives one spark. Tried pulling CPS out and using iron rod to trigger cps, sparks each time, Pump runs, injectors pulse once like plugs,

dunlop0_1 · 28-Mar-2014, 06:25

Thanks for that for that Kev.

Only thing left for me would be to change the loom for a known working one and then start again from scratch.

Iconic944ss · 28-Mar-2014, 11:03

Does anyone know if the Ducati-Diag software would throw up any faults that might help...

Just curious, for possible future info...

Iconic944ss · 28-Mar-2014, 11:17

A quick look found similar problems elsewhere but nothing specific.

Here is a Ducati forum specific search for you to try:

Iconic MegaSearch

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27-Mar-2014, 18:53	#1
skidlids MotoGP God Posts: 18,275 Join Date: Apr 2002 Location: Oxford Mood: Its ONLY a Bike Club The usual reason for blowing the Coil driver inside the ECU is a fault on its output, usually a dodgy coil. Have the coils been checked or changed Checkout the Desmo Due Paddock on Facebook Reply

27-Mar-2014, 20:13	#2
dunlop0_1 Registered Forum User Big Twin Posts: 1,568 Join Date: May 2009 Sounds similar to the fault I had at Anglesey. Eventually backfired and set fire to the air filters . Turned out to be the air pressure sensor, the one on the header tank. However you mention an immobilizer? does it have an alarm because that would be my first suspect. Reply

28-Mar-2014, 06:25	#5
dunlop0_1 Registered Forum User Big Twin Posts: 1,568 Join Date: May 2009 Thanks for that for that Kev. Only thing left for me would be to change the loom for a known working one and then start again from scratch. Reply

28-Mar-2014, 11:03	#6
Iconic944ss Registered Forum User WSB Hero Bikes: 1993 - 944SS & Aprilia Falco Posts: 7,795 Join Date: Oct 2002 Location: north east Does anyone know if the Ducati-Diag software would throw up any faults that might help... Just curious, for possible future info... Reply

28-Mar-2014, 11:17	#7
Iconic944ss Registered Forum User WSB Hero Bikes: 1993 - 944SS & Aprilia Falco Posts: 7,795 Join Date: Oct 2002 Location: north east A quick look found similar problems elsewhere but nothing specific. Here is a Ducati forum specific search for you to try: Iconic MegaSearch Reply