1150 GS Wont Start. Possible Fuel Pump

B4ndit

B4ndit

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Took the bike to work yesterday morning. Ran well with absolutely no issues. After work I couldn't start it.

All the instruments and lights switched on. And the bike turned over freely but wouldn't fire.

I did observe that the fuel pump wasn't making any noise at all and even though I had turned it over for a few minutes there was no smell of fuel. So anyway I just left it with a view to having it recovered Monday.

I also wasn't able to hear much clicking going on in the relay department either. If the relay is working does it click continuously or just the once.

My question is. Can I swap over a relay from one of the other relays to see if its the relay that's kaput. Is there one that I can do it with? I will also check the plug under the tank to see if that's come apart or damaged. If not then its time for recovery.

Showing my lack of knowledge. If a fuel pump was to pack up mid ride would I still be able to continue riding the bike until I turned it off.

Likewise if the relay packed up mid ride would I still be able to ride the bike until I turned it off.

If no to either of these questions then something must have just died when it was parked up.

All guidance and knowledge gratefully received on this wet and miserable day.
 
You cannot ride without a functioning fuel pump. Sometimes they just die and I know.

You can swap relays. Check your manual for which one it is.
You can keep going if the relay fails during your ride but, you are done for once you stop the engine.
 
B4ndit said:
Took the bike to work yesterday morning. Ran well with absolutely no issues. After work I couldn't start it.

All the instruments and lights switched on. And the bike turned over freely but wouldn't fire.

I did observe that the fuel pump wasn't making any noise at all and even though I had turned it over for a few minutes there was no smell of fuel. So anyway I just left it with a view to having it recovered Monday.

I also wasn't able to hear much clicking going on in the relay department either. If the relay is working does it click continuously or just the once.

My question is. Can I swap over a relay from one of the other relays to see if its the relay that's kaput. Is there one that I can do it with? I will also check the plug under the tank to see if that's come apart or damaged. If not then its time for recovery.

Showing my lack of knowledge. If a fuel pump was to pack up mid ride would I still be able to continue riding the bike until I turned it off.

Likewise if the relay packed up mid ride would I still be able to ride the bike until I turned it off.

If no to either of these questions then something must have just died when it was parked up.

All guidance and knowledge gratefully received on this wet and miserable day.
Click to expand...

1. Your bike requires a fuel pump to run. If the fuel pump fails, the engine stops.

2. Check Fuse 6 - this cover the fuel pump circuit

3. If fuse 6 is good, take the horn relay out and swap it with the fuel pump relay - they are identical.

i-C7xrxRR-L.jpg


4. With everything switched on ready to start, is the display normal? Do you have all information showing in the RID? Is the sidestand down?

5. Have you done anything to the bike (lifted the tank, jet washed it etc) since it was running normally?

Mike :cool:
 
Mike,

Lovely diagram.

I haven't done anything to the bike this year. Just used it for work and a bit of touring. Fuel filter was replaced last September but done a few miles since then. And that was the last time the tank was off. So no reason any of my tinkering has disturbed anything. Not with immediate results anyway.

I will double check the fuse (That was done in the dark yesterday), check the connector under the tank and then swap the relay over. Then see how I get on.

Thanks for the info on which relay to swap. I think I am going to order a couple of spares if I can find a cheap source.
 
Fuel pump

As Ditchy says they "do go" usually in the most desolate spots! do a search on here there are alternatives like a n Audi one, same pump but cheaper.
 
Check the tank electrical connector. Usual time of year for corrosion to find it's way into the terminals.
 
Last summer it happened something similar to me. After checking that through the contacts of the fuel pump relay, the fuel pump worked fine, I discovered that someone had pullout of the connector under the contact key switch. It was´nt fully out just only shifted slightly.
 
B4ndit said:
Blaster, Can you explain where this is.
Click to expand...

Under the main keyswitch but did you not say that the RID etc were working fine? Usually if that's working then the system for the pump is too

Usually it's a corroded terminal or wire broken just behind the terminal

If you need a fuel pump this was a direct replacement
 
Yep the RID is working fine and the starter spins well. Absolutely no signs of firing though. I shall concentrate on the fuel electrical system.

Whats the signs for a side stand switch that is faulty. Will the engine turn over on the button or is everything dead?
 
B4ndit said:
Yep the RID is working fine and the starter spins well. Absolutely no signs of firing though. I shall concentrate on the fuel electrical system.

Whats the signs for a side stand switch that is faulty. Will the engine turn over on the button or is everything dead?
Click to expand...

On an 1150 the engine will turn over but not start. On a 1100 nothing happens.

Can you hear the fuel pump whirring when you turn the ignition on, :beer:
 
The first thing I did was to connect direct current to the fuel pump through the connector on the right side of the tank. I could ear the fuel pump working. After that, I made a bridge in the contacts of the fuel pump relais. Again I could ear the noise of the pump. So for a short time I get crazy trying to understand why didn´t the relais work. I began to test the wiring of the relais (I disarmed the all the relay box :p1zzed: ) And then, I discovered the connector problem.
 
Right, a quick and easy check to see if the fuel pump has any life in it is to disconnect an injector from the throttle body end, point the ouput away from harm, and turn the engine over (You said it turns over. Right!). If the pump has some function you should have a spray of fuel coming out of the injector as the engine rotates.

It will not be a definitive test but could tell you something. Don't set anything on fire.
 
Right bike home. A day to dry it out then its off with the fuel tank tomorrow night.
 
What are you going to do when the fuel tank is off the bike before establishing something about you fuel pumps' performance?
 
Look for any obvious problems. If none, whip the fuel pump out and give it 12 volts. If it works I think I will be scratching my head. If it doesn't (Which I suspect) then its time to order a new one.
 
Better to feed it 12 volts when it's in fluid and watch the rate of flow and pressure

Running them in the air is not good for them The fuel both lubricates and cools them
 
Nippy Normans supply Touratech, Wunderlich, Desert Fox and many other makes of accessories.
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