Hi all

Hoping someone might be able to help with a little diagnostic....

I finally got round to completing my wiring loom and trying to start the engine yesterday and don't think the injectors are working.

When I turn the ignition the following happens:
Butterflies flicker
Fuel pump primes
As I crank it over I have a spark but the throttle bodies look dry and it doesn't attempt to start.

Does anyone have any idea on what I should check first?!

Ps the immobiliser has been removed (and I assume this would result in no spark if that was the issue)

Cheers

Ben

Have you dealt with the Tip-over sensor?

And have you grounded the clutch wire to make it think the clutch is pulled?

Yea done both of these (although I'll check again later)

I assumed these would cut the spark not the fuel although this is my first build using throttle bodies so I could be wrong

Cheers

Ben

What year of engine?

Not familiar with the GSXR so forgive me if any of this doesn't apply but...

Any immobiliser or tilt sensor I've come across cuts fuel by killing the fuel pump not the injectors. can you check if it still has supply voltage to the pump when cranking?

Common mistake is connecting the fuel supply to the wrong end of the fuel rail. Inlet is the opposite end to the presure regulator. That would account for not fuel at the injectors but the pump running. Ignore this if the GSXR is one of the rare motors that are regulated at the pump and don't have a return pipe.

It's not always easy to see fuel from the injectors in situ'. Are the plugs dry or wet after trying to start? Do the plugs smell of fuel? You could also check with a noid light on the injector plug to see if there's a signal to the injector.

Hi

Its a K8 engine and ECU.

I will check the fuel system but fairly sure it is connected properly (the GSXR only has 1 fuel line I think and the regulation is done in the tank)

Plan to go and check the voltages at the coils tonight.

Thanks for all the tips!

Ben

Hi Ben

If you get stuck please give me a call on 07779208569,we use Suzuki engines all the time,we can remove lots of things in the Ecu so you can remove most of the wiring,
Here's a list of things we can do direct from the Ecu

Remove immobiliser
Up the revlimit
Remove top speed limiter
Re map the standard Ecu to save buying a power commander
Set steering damper to 0%
Flatshifter

And lots more

Thanks Danny

Car is up and running now thanks to Danny and Steve at MK Sports Cars

anyone out there with Suzuki ECU issues these are the guys to talk to!

Ben