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Old 20-May-2012, 13:11
pguenet pguenet is offline
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Big Twin
 
Posts: 1,413
Join Date: Aug 2002
ST4s non start issue

Hi

Posting this here as I don't seem to be able to fix myself.

My ST4s has decided to stop starting all of a sudden.

- Battery cranks the engine OK
- Sparks go to the plugs OK
- Fuel pump primes OK
- I have an alarm on it but have bypassed it using a replacement loom and problem remains

- I have tried resetting the immobiliser by turning on with Red Key - then turning on with each of the spare keys.

- I have not tried the side stand switch but have a side stand bypass anyway and can start on the side stand.

Problem happened all of a sudden, no sign of weakening at start or else.
Rode the bike to work in the morning with no problem whatsoever.
It decided not to start on the way back and got stranded.

It looks like the problem is that no fuel is spit by the injectors.
I have removed the airbox and looking into the throttle bodies and it is stone dry in there.

Any idea what could be the problem?
Do you know if the immobiliser cuts the injection?
Would I need to change the little black box on the side?
Do I need to change ECU as well?

Please let me know if you have any idea?

Cheers
philippe
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