[mjb]

starting problems with my 08 R1 I have 12 v at the fuel pump with key on but when I try to start it the voltage drop to about 6 v and the pump won't pump

 

[meanmaxx]

starting problems with my 08 R1 I have 12 v at the fuel pump with key on but when I try to start it the voltage drop to about 6 v and the pump won't pump

Charge the battery! Then test it again.

 

[mjb]

Charge the battery! Then test it again.

already did that

 

[meanmaxx]

already did that

So the battery is holding up! Check the connector harness to the main for abrassion, pinch or anything that doesnt look right. If nothing is found, I would assume the pump motor. I would try an alternate power source to the pump, before i would determine an ECU failure. I would try to run the pump for a few minutes in case there was something foreign between the windings and stator. Just a thought.............

 

[meanmaxx]

already did that

So the battery is holding up! Check the connector harness to the main for abrassion, pinch or anything that doesnt look right. If nothing is found, I would assume the pump motor. I would try an alternate power source to the pump, before i would determine an ECU failure. I would try to run the pump for a few minutes in case there was something foreign between the windings and stator. Just a thought.............

 

[mjb]

So the battery is holding up! Check the connector harness to the main for abrassion, pinch or anything that doesnt look right. If nothing is found, I would assume the pump motor. I would try an alternate power source to the pump, before i would determine an ECU failure. I would try to run the pump for a few minutes in case there was something foreign between the windings and stator. Just a thought.............

checked and cleaned all connectors and run a jumper to pump bike started right up I let it run for several min., are you thinking ECU failure

 

[meanmaxx]

checked and cleaned all connectors and run a jumper to pump bike started right up I let it run for several min., are you thinking ECU failure

Not just yet! I would pin it back to the ECU harness and check both wires from connector to ECU connector. Probably one of the wires has hi resistance. If they seem to be around the same, then I would consider the ECU.

 

[299]

starting problems with my 08 R1 I have 12 v at the fuel pump with key on but when I try to start it the voltage drop to about 6 v and the pump won't pump

does the pump failure be a reason to low idling?

 

[mjb]

does the pump failure be a reason to low idling?

if the fuel pump fails there is no idling

 

[sac5.0]

did we find out what was causing this?

 

[mjb]

did we find out what was causing this?

not yet, I'm thinking it's in the grounding somewhere

 

[meanmaxx]

not yet, I'm thinking it's in the grounding somewhere

Its internally grounded, dude.

 

[mjb]

Its internally grounded, dude.

yes the fuel pump is but I was talking about the harness sorry should have made myself clearer

 

[uksparky]

starting problems with my 08 R1 I have 12 v at the fuel pump with key on but when I try to start it the voltage drop to about 6 v and the pump won't pump

check the negative wire from the battery to ground, could be loose...if ok i would load test the battery

 

[Hutton]

solution??

Have you found a solution yet? I'm having the exact same problem and it's driving me nuts.

 

[bass16v]

Have you found a solution yet? I'm having the exact same problem and it's driving me nuts.

What's your problem? Starting the bike or just having the 6V?