[Stijn]

Hi Gents,

I'm new her, my name is Stijn, I'm from Amsterdam (bitterly cold at the moment) and yesterday I thought I was gonna take the bike to the city...
I'm sorry to straight away after joining the forum start asking questions but until yesterday my AT had never let me down :-(

After standstill for a few months at the initial start yesterday it gave a few sputters in the beginning but little sign of ignition since.
I took out one of the spark plugs which only seems to spark occasionally, actually as far as I can see it's limited to the occasional one spark just after hitting the start button.
I've removed the side panels and fuel tank and checked the other HT leads with the same occasional spark.

Googling the problem pointed me towards the fuel pump which also doesn't seem to start upon hitting the start button (it is working fine when connected to 12V). 10AMP fuse of ignition system/fuel pump seem to be fine.

Status quo: engine is cranking but no ignition, no sparks, no fuel pump start? Where to look next?

Any ideas? Could it be the ignition control module (google says it's very unlikely)? Am I missing a fuse?

Hope you can help me, thanks and regards,
Stijn

 

[vinas]

Have you got immobilizer?

 

[Stijn]

Have you got immobilizer?

negative, nothing fancy ;-)
btw I think it's a '95 XRV RD07

 

[vinas]

Check 30 amp fuse and connection on solenoid, if you plenty fuel in the tank you can bypass pump , make sure when stating have choke on

 

[vinas]

And when starting don't use accelerator ( throttle ) just full choke, you flood plugs

 

[AndyLong]

Are you getting volts to the pump?

The ECU sends pulses to the coils and fuel pump relay. If the relay is faulty the pump won't run. Bypass the relay and see if the pump runs.

 

[AndyLong]

There will be some corrosion I'm guessing somewhere in the relevant electrics

 

[Stijn]

Good plan, I'll check the fuel pump feed tomorrow and will bypass the relay.
I've tested the pump itself and that seems to be fine.
I've also checked the connections on the starter solenoid and tested the 30AMP fuse which was a bit corroded but not burned, I've cleaned it but this wasn't the issue.

I'm guessing some faulty contacts as well but not sure where to look.
I was hoping for somebody who experienced the same issue and could point me in a specific direction since it seems to be in both the ignition and the fuel pump.

According to the electrical diagrams also the side stand, clutch handle and neutral gear switches seem to have affect on the ignition module but on first sight these seem to be fine.

 

[serious3]

Kill switch, mine failed overnight took lots of head scratching, take switch apart and join the two wires, job done

 

[vinas]

If kill switch faulty starter won't run.

 

[midlifekrisis]

Hi The crank sensor which communicates with the ecu which then powers up the coils and fuel pump may be worth a look, the intermittent spark is a concern as it indicates there is something 'happening' in the circuit, I would check the basics first, best of luck.

 

[Stijn]

Hello guys,
Good and bad news: engine is running, yeah!!! I don't know why it didn't before...

Last half attempt and just when I was about to give up and send it off to a 'specialist', I fiddled some more with wires and it started, while nothing was replaced. I'll spray some extra electro-clean and hope for the best

Thanks for your input
Stijn

 

[Frostguiding]

Well worth checking. Starter motor works on mine with kill switch off. RD04. Don't ask how I know.